Eating and Moving Well · 150 Foods and 50 Activities

1Brown lentils

Pulses and legumes

The reference low-glycaemic staple; slow to digest, high in soluble fibre.

Lentils release glucose slowly because their starch is trapped within intact cell walls and resistant starch. They also lower the glycaemic response of the meal eaten alongside them.

Glycaemic index: Low, approximately 29
Glycaemic load: Low, about 5 per 150 g cooked
Carbohydrate: 20 g per 100 g cooked
Fibre: 7.9 g per 100 g cooked
Portion: 150 g cooked, around 5 heaped tablespoons
Key nutrients: Folate, iron, potassium, magnesium, plant protein
Why it helps: Blunts post-meal glucose rise and improves satiety; regular intake is associated with lower fasting glucose and HbA1c.
Evidence: Strong. Randomised trials of pulse-enriched diets show reductions in HbA1c and post-prandial glucose; supported by large prospective cohorts.
Caution: Introduce gradually to limit bloating. Those on warfarin should keep folate and vitamin K intake steady rather than variable.
Preparation: Cook until just tender rather than soft; overcooking raises the glycaemic response.

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2Chickpeas

Pulses and legumes

Versatile pulse with one of the lowest glycaemic responses of any staple.

Chickpeas combine slowly digested starch with viscous fibre. Their effect on the following meal's glucose response is well documented.

Glycaemic index: Low, approximately 28
Glycaemic load: Low, about 8 per 150 g cooked
Carbohydrate: 27 g per 100 g cooked
Fibre: 7.6 g per 100 g cooked
Portion: 150 g cooked, around 5 heaped tablespoons
Key nutrients: Plant protein, folate, manganese, phosphorus
Why it helps: Improves post-meal glucose and lipid profile; substituting chickpeas for refined starch lowers overall glycaemic load.
Evidence: Strong. Controlled feeding trials show lower post-prandial glucose when chickpeas replace refined carbohydrate.
Caution: Tinned varieties may be high in sodium; rinse well. Portion still counts toward carbohydrate for those adjusting insulin.
Preparation: Home-cooked from dried gives a lower glycaemic response than tinned, though both are useful.

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3Black beans

Pulses and legumes

Dense in resistant starch and polyphenols.

The dark coat carries anthocyanins with antioxidant activity, while the starch structure resists rapid digestion.

Glycaemic index: Low, approximately 30
Glycaemic load: Low, about 7 per 150 g cooked
Carbohydrate: 24 g per 100 g cooked
Fibre: 8.7 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Anthocyanins, folate, magnesium, plant protein
Why it helps: Supports glycaemic control and feeds colonic bacteria producing short-chain fatty acids linked to insulin sensitivity.
Evidence: Moderate to strong. Trial evidence for glycaemic benefit is consistent; the microbiome mechanism is supported but less directly proven in outcomes.
Caution: Dried beans must be boiled thoroughly. Gradual introduction limits digestive discomfort.
Preparation: Cooking then cooling raises resistant starch, which lowers the glycaemic response further.

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4Kidney beans

Pulses and legumes

Among the lowest glycaemic index of common legumes.

Kidney beans contain alpha-amylase inhibitors that slow starch digestion, alongside a substantial fibre load.

Glycaemic index: Low, approximately 24
Glycaemic load: Low, about 6 per 150 g cooked
Carbohydrate: 22 g per 100 g cooked
Fibre: 7.4 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Plant protein, iron, potassium, folate
Why it helps: Reduces post-meal glucose excursions and contributes to lower LDL cholesterol, relevant to cardiovascular complication risk.
Evidence: Strong for glycaemic effect and LDL reduction; both are supported by randomised trials and meta-analyses.
Caution: Raw or undercooked kidney beans contain lectins that cause acute illness. Boil vigorously for at least ten minutes.
Preparation: Soak overnight, discard the water, and boil hard before simmering.

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5Split peas

Pulses and legumes

Inexpensive, filling and very low glycaemic.

Split peas thicken soups without added starch and deliver a large fibre dose for their calorie content.

Glycaemic index: Low, approximately 25
Glycaemic load: Low, about 6 per 150 g cooked
Carbohydrate: 21 g per 100 g cooked
Fibre: 8.3 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Plant protein, thiamin, folate, potassium
Why it helps: Slows gastric emptying and improves satiety, supporting the modest weight loss that most improves insulin sensitivity.
Evidence: Strong for the glycaemic effect; the weight pathway rests on established trial evidence that 5 to 10 per cent weight loss improves glycaemia.
Caution: High potassium; those with advanced kidney disease should take dietetic advice on portion.
Preparation: No soaking needed. Simmer until soft for soups, or keep firmer in salads.

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6Butter beans

Pulses and legumes

Creamy texture that substitutes well for potato.

Their soft texture makes them a useful mash in place of potato, cutting the glycaemic load of a familiar plate.

Glycaemic index: Low, approximately 31
Glycaemic load: Low, about 7 per 150 g cooked
Carbohydrate: 23 g per 100 g cooked
Fibre: 7 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Plant protein, magnesium, potassium, folate
Why it helps: Replacing mashed potato with bean mash markedly lowers the meal's glycaemic load.
Evidence: Strong for legume substitution effects on post-prandial glucose; the specific swap is well supported by exchange trials.
Caution: Tinned versions vary in salt content. Rinse before use.
Preparation: Mash with olive oil, garlic and lemon rather than butter and milk.

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7Edamame

Pulses and legumes

Young soya beans; high protein, very low carbohydrate.

Edamame carries more protein and less available carbohydrate than most pulses, making it a useful snack.

Glycaemic index: Very low, approximately 18
Glycaemic load: Very low, about 2 per 100 g
Carbohydrate: 9 g per 100 g
Fibre: 5 g per 100 g
Portion: 100 g podded
Key nutrients: Complete plant protein, folate, vitamin K, isoflavones
Why it helps: Minimal effect on blood glucose while providing satiety; soya intake is associated with modest improvements in lipid profile.
Evidence: Moderate. Glycaemic neutrality is well established; soya and lipid outcomes rest on meta-analyses of modest effect size.
Caution: Those taking levothyroxine should separate soya intake from the dose by several hours.
Preparation: Steam and eat warm with a little salt, or add podded beans to salads.

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8Chana dal

Pulses and legumes

One of the lowest glycaemic index values recorded for any staple food.

Split Bengal gram is slow to digest even after prolonged cooking, an unusual property among prepared pulses.

Glycaemic index: Very low, approximately 8 to 11
Glycaemic load: Very low, about 3 per 150 g cooked
Carbohydrate: 22 g per 100 g cooked
Fibre: 8 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Plant protein, folate, iron, magnesium
Why it helps: Produces one of the flattest post-meal glucose curves of any carbohydrate staple.
Evidence: Strong. Repeatedly measured in glycaemic index testing with consistently very low values.
Caution: As with all pulses, the carbohydrate still counts for insulin dosing even at low glycaemic index.
Preparation: Cook with turmeric and cumin; serve in place of rice.

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9Peanuts

Pulses and legumes

Botanically a legume; a low-glycaemic snack that displaces worse options.

Peanuts combine protein, fat and fibre with almost no available carbohydrate, so they barely move blood glucose.

Glycaemic index: Very low, approximately 14
Glycaemic load: Very low, about 1 per 30 g
Carbohydrate: 16 g per 100 g
Fibre: 8.5 g per 100 g
Portion: 30 g, a small handful
Key nutrients: Monounsaturated fat, niacin, vitamin E, magnesium
Why it helps: Substituting nuts for refined snacks is associated with lower incident type 2 diabetes and improved lipids.
Evidence: Moderate to strong. Cohort evidence for diabetes incidence is consistent; RCT evidence supports lipid improvement.
Caution: Energy dense, so portion matters for weight. Choose unsalted, unsweetened. Allergy is common and can be severe.
Preparation: Buy plain roasted, not honey roasted or heavily salted.

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10Hummus

Pulses and legumes

Turns raw vegetables into a satisfying, low-glycaemic snack.

Blended chickpeas with tahini and olive oil combine fibre, protein and unsaturated fat, a combination that slows glucose absorption.

Glycaemic index: Low, approximately 6 to 25 depending on recipe
Glycaemic load: Low, about 3 per 60 g
Carbohydrate: 14 g per 100 g
Fibre: 6 g per 100 g
Portion: 60 g, around 3 tablespoons
Key nutrients: Plant protein, unsaturated fat, calcium, folate
Why it helps: Replaces higher-glycaemic dips and spreads; the fat and fibre together flatten the glucose response of the whole snack.
Evidence: Moderate. Direct trials are small, but the effect follows from well-established evidence on legumes, fat and gastric emptying.
Caution: Shop-bought versions vary widely in oil, salt and additives. Read the label.
Preparation: Make at home to control salt; serve with cucumber, pepper and celery rather than bread.

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11Steel-cut oats

Whole grains

Coarse oat pieces with a far lower glycaemic response than instant oats.

The larger the oat particle, the slower the digestion. Steel-cut oats sit well below rolled or instant versions.

Glycaemic index: Low to medium, approximately 52
Glycaemic load: Medium, about 11 per 40 g dry
Carbohydrate: 60 g per 100 g dry
Fibre: 10 g per 100 g dry
Portion: 40 g dry, around 4 tablespoons
Key nutrients: Beta-glucan, manganese, phosphorus, B vitamins
Why it helps: Beta-glucan forms a viscous gel that slows glucose absorption and lowers LDL cholesterol.
Evidence: Strong. Beta-glucan's effects on post-prandial glucose and LDL are recognised by regulatory health claim assessments and supported by meta-analyses of RCTs.
Caution: Instant and flavoured oats behave quite differently and can spike glucose. Not interchangeable.
Preparation: Cook with water or unsweetened milk; add cinnamon and nuts rather than sugar or honey.

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12Pearl barley

Whole grains

One of the lowest glycaemic grains available.

Barley's beta-glucan content and dense structure give it an unusually flat glucose curve for a grain.

Glycaemic index: Low, approximately 28
Glycaemic load: Low, about 9 per 150 g cooked
Carbohydrate: 28 g per 100 g cooked
Fibre: 3.8 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Beta-glucan, selenium, manganese, B vitamins
Why it helps: Substituting barley for white rice or potato substantially lowers meal glycaemic load; also improves next-meal glucose response.
Evidence: Strong. Randomised crossover trials show both immediate and second-meal glycaemic benefits.
Caution: Contains gluten, so unsuitable in coeliac disease.
Preparation: Use in soups and salads in place of rice or couscous.

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13Bulgur wheat

Whole grains

Quick to prepare and much lower glycaemic than couscous.

Bulgur is parboiled and cracked rather than milled, so much of the grain structure survives.

Glycaemic index: Low, approximately 48
Glycaemic load: Medium, about 12 per 150 g cooked
Carbohydrate: 19 g per 100 g cooked
Fibre: 4.5 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Manganese, magnesium, B vitamins, fibre
Why it helps: A straightforward swap for couscous or white rice that lowers the glycaemic load of the same dish.
Evidence: Strong for the glycaemic index difference; substitution trials support meaningful reductions in post-meal glucose.
Caution: Contains gluten. The carbohydrate load remains substantial at large portions.
Preparation: Soak in hot stock rather than boiling; combine with plenty of parsley, tomato and lemon as tabbouleh.

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14Quinoa

Whole grains

Complete protein with a moderate glycaemic response.

Quinoa's protein content is unusual among grains, and the protein itself slows the glucose rise.

Glycaemic index: Low to medium, approximately 53
Glycaemic load: Medium, about 13 per 150 g cooked
Carbohydrate: 21 g per 100 g cooked
Fibre: 2.8 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Complete protein, magnesium, iron, manganese
Why it helps: Replaces white rice with a lower glycaemic load and greater satiety per calorie.
Evidence: Moderate. The glycaemic index is well characterised; trial evidence for clinical outcomes is limited but favourable.
Caution: Energy content is similar to rice, so portion still governs total carbohydrate.
Preparation: Rinse before cooking to remove saponins; toast briefly for flavour.

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15Wholegrain rye bread

Whole grains

Dense sourdough rye gives one of the lowest glycaemic responses of any bread.

The combination of intact rye kernels, dense crumb and sourdough acidity slows starch digestion considerably.

Glycaemic index: Low, approximately 41 for dense wholegrain rye
Glycaemic load: Medium, about 12 per 60 g slice
Carbohydrate: 40 g per 100 g
Fibre: 8 g per 100 g
Portion: 60 g, one thick slice
Key nutrients: Fibre, manganese, magnesium, B vitamins
Why it helps: Lower post-meal glucose and insulin response than wheat bread, with better satiety per slice.
Evidence: Strong. Rye's advantage over wheat bread in post-prandial insulin response is consistently reproduced in crossover trials.
Caution: Contains gluten. Many supermarket ryes are largely wheat with rye colouring; check the ingredient order.
Preparation: Choose dense, whole-kernel loaves. Toast and top with avocado, eggs or oily fish.

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16Buckwheat

Whole grains

Gluten free, rich in rutin, with a modest glycaemic response.

Despite the name, buckwheat is unrelated to wheat and contains compounds studied for their effect on insulin sensitivity.

Glycaemic index: Low to medium, approximately 45 to 54
Glycaemic load: Medium, about 13 per 150 g cooked
Carbohydrate: 20 g per 100 g cooked
Fibre: 2.7 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Rutin, magnesium, manganese, plant protein
Why it helps: Lower glycaemic response than rice, with flavonoids studied for vascular benefit relevant to complication risk.
Evidence: Moderate. Glycaemic data are solid; the vascular claims rest on smaller trials and mechanistic work, so should be treated as promising rather than proven.
Caution: Buckwheat allergy exists and can be significant in some populations.
Preparation: Toast the groats before boiling; use in place of rice or in salads.

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17Wholegrain freekeh

Whole grains

Green wheat, roasted young; high fibre, low glycaemic.

Harvested while still green and fire-roasted, freekeh retains more fibre and protein than mature wheat.

Glycaemic index: Low, approximately 43
Glycaemic load: Medium, about 11 per 150 g cooked
Carbohydrate: 22 g per 100 g cooked
Fibre: 6 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Fibre, plant protein, manganese, zinc
Why it helps: High fibre per portion supports satiety and slower glucose absorption.
Evidence: Moderate. Composition is well documented; direct clinical trials are few, so the benefit follows from established fibre and glycaemic index evidence.
Caution: Contains gluten.
Preparation: Simmer in stock; serve with roasted vegetables and herbs.

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18Wild rice

Whole grains

Not a true rice; higher protein and lower glycaemic than white rice.

Wild rice is an aquatic grass seed with a tough outer layer that slows digestion.

Glycaemic index: Low to medium, approximately 45 to 57
Glycaemic load: Medium, about 13 per 150 g cooked
Carbohydrate: 21 g per 100 g cooked
Fibre: 1.8 g per 100 g cooked
Portion: 150 g cooked
Key nutrients: Plant protein, zinc, manganese, B vitamins
Why it helps: A lower glycaemic alternative to white rice with more protein per portion.
Evidence: Moderate. Glycaemic values vary with cooking; the advantage over white rice is consistent.
Caution: Prolonged cooking softens the grain and raises the glycaemic response.
Preparation: Cook until the grains just split, no further. Mix with brown rice to moderate cost.

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19Whole oats, cooled

Whole grains

Cooking then chilling raises resistant starch.

When cooked starch cools, part of it retrogrades into resistant starch that behaves more like fibre than sugar.

Glycaemic index: Lowered by roughly 10 to 20 per cent compared with the same food eaten hot
Glycaemic load: Reduced proportionally
Carbohydrate: Varies with the base grain
Fibre: Effective fibre increases through resistant starch
Portion: As for the underlying grain
Key nutrients: Beta-glucan, resistant starch
Why it helps: The cooling step lowers the glycaemic response of the same food without changing the recipe.
Evidence: Moderate. The retrogradation effect is well demonstrated in laboratory and small human studies; the magnitude varies by food and person.
Caution: Cool and store safely to avoid bacterial growth; reheating regains only part of the effect.
Preparation: Overnight oats in the fridge exploit this directly.

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20Wholemeal pasta, cooked al dente

Whole grains

Firmness matters as much as the flour.

Pasta's dense protein network traps starch. Cooking it firm rather than soft keeps the glycaemic response low.

Glycaemic index: Low, approximately 42 when firm
Glycaemic load: Medium, about 16 per 150 g cooked
Carbohydrate: 27 g per 100 g cooked
Fibre: 4 g per 100 g cooked
Portion: 150 g cooked, around a cupped handful dry
Key nutrients: Fibre, manganese, selenium, B vitamins
Why it helps: Firm-cooked pasta produces a notably lower glucose peak than soft-cooked or refined pasta.
Evidence: Strong. The effect of cooking time on pasta glycaemic index is well replicated.
Caution: Contains gluten. Portion size is the main determinant of load; a restaurant serving is often three portions.
Preparation: Cook two minutes less than the packet states, and pair with olive oil, vegetables and protein.

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21Broccoli

Non-starchy vegetables

Negligible glycaemic impact with a substantial nutrient return.

Broccoli contains sulforaphane, a compound studied for its effect on hepatic glucose production.

Glycaemic index: Very low, effectively negligible
Glycaemic load: Negligible, under 1 per 80 g
Carbohydrate: 7 g per 100 g
Fibre: 2.6 g per 100 g
Portion: 80 g, around 8 florets
Key nutrients: Sulforaphane, vitamin C, vitamin K, folate
Why it helps: Fills the plate without raising glucose; sulforaphane has shown modest fasting glucose reductions in early trials.
Evidence: Strong for glycaemic neutrality. The sulforaphane finding is preliminary, from small trials, and should not be relied upon as treatment.
Caution: Those on warfarin should keep vitamin K intake consistent rather than avoiding it.
Preparation: Steam briefly rather than boiling to retain the compounds and texture.

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22Spinach

Non-starchy vegetables

Leafy greens carry the most consistent cohort evidence of any single food group.

Green leafy vegetable intake shows a repeatable inverse association with incident type 2 diabetes.

Glycaemic index: Very low, effectively negligible
Glycaemic load: Negligible
Carbohydrate: 3.6 g per 100 g
Fibre: 2.2 g per 100 g
Portion: 80 g raw, or 3 tablespoons cooked
Key nutrients: Magnesium, folate, vitamin K, nitrates, lutein
Why it helps: Associated with lower diabetes incidence; magnesium status is itself linked to insulin sensitivity.
Evidence: Moderate to strong. Meta-analyses of prospective cohorts show a consistent inverse association, though cohort data cannot establish causation.
Caution: High oxalate; those with a history of oxalate kidney stones should moderate intake. Keep vitamin K steady on warfarin.
Preparation: Wilt briefly with garlic and olive oil; the fat improves absorption of the carotenoids.

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23Kale

Non-starchy vegetables

Robust leaf with high fibre and carotenoid content.

Kale withstands cooking well and delivers lutein and zeaxanthin, carotenoids concentrated in the retina.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 4.4 g per 100 g
Fibre: 4.1 g per 100 g
Portion: 80 g
Key nutrients: Lutein, zeaxanthin, vitamin K, vitamin C, calcium
Why it helps: Glycaemically inert and a source of retinal carotenoids, of interest given retinopathy risk.
Evidence: Strong for glycaemic neutrality. Evidence that dietary lutein affects diabetic retinopathy specifically is limited and should not displace retinal screening.
Caution: Vitamin K content is high; keep intake consistent on warfarin.
Preparation: Massage raw leaves with oil and lemon, or roast until crisp.

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24Courgette

Non-starchy vegetables

Bulks out a plate at almost no carbohydrate cost.

Spiralised or sliced, courgette substitutes for part of a pasta or rice portion without altering the dish's character.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 3.1 g per 100 g
Fibre: 1 g per 100 g
Portion: 80 g, around half a medium courgette
Key nutrients: Vitamin C, potassium, manganese
Why it helps: Halving a pasta portion and replacing the volume with courgette roughly halves the meal's glycaemic load.
Evidence: Strong. The benefit follows directly from carbohydrate displacement, which is arithmetic rather than inference.
Caution: None of significance.
Preparation: Griddle or roast rather than boil, to avoid a watery result.

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25Aubergine

Non-starchy vegetables

Meaty texture, minimal carbohydrate, absorbs flavour well.

Aubergine's spongy flesh makes it a good vehicle for olive oil and spice in place of starchier bases.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 5.9 g per 100 g
Fibre: 3 g per 100 g
Portion: 80 g
Key nutrients: Nasunin, fibre, potassium, manganese
Why it helps: Substantial satiety for very little carbohydrate.
Evidence: Strong for glycaemic neutrality; claims about aubergine and blood glucose beyond this are not well supported.
Caution: Absorbs large amounts of oil when fried; roast or griddle instead.
Preparation: Salt and drain, then roast with olive oil, garlic and herbs.

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26Cauliflower

Non-starchy vegetables

The most useful substitute for rice and mashed potato.

Blitzed and briefly cooked, cauliflower replaces a starch portion almost entirely.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 5 g per 100 g
Fibre: 2 g per 100 g
Portion: 80 g
Key nutrients: Vitamin C, vitamin K, folate, choline
Why it helps: Replacing a 150 g rice portion with cauliflower removes roughly 30 g of available carbohydrate from the meal.
Evidence: Strong. The effect is a direct consequence of carbohydrate replacement.
Caution: Those adjusting insulin should recalculate the dose when substituting, to avoid hypoglycaemia.
Preparation: Pulse in a food processor and dry-fry briefly; do not boil.

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27Green beans

Non-starchy vegetables

Everyday vegetable with useful fibre and no glycaemic burden.

Green beans provide bulk and fibre at a very low carbohydrate cost, and keep well.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 7 g per 100 g
Fibre: 3.4 g per 100 g
Portion: 80 g
Key nutrients: Vitamin C, vitamin K, folate, silicon
Why it helps: Adds volume and fibre to a meal, improving satiety without affecting glucose.
Evidence: Strong for glycaemic neutrality.
Caution: None of significance.
Preparation: Steam until just tender and dress with olive oil and lemon.

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28Peppers

Non-starchy vegetables

High in vitamin C with negligible effect on glucose.

Sweet peppers taste sugary but contain little available carbohydrate per portion.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 6 g per 100 g
Fibre: 2.1 g per 100 g
Portion: 80 g, around half a large pepper
Key nutrients: Vitamin C, vitamin A, vitamin B6, carotenoids
Why it helps: Adds sweetness and colour to meals without raising glucose, useful when reducing sugar elsewhere.
Evidence: Strong for glycaemic neutrality.
Caution: None of significance.
Preparation: Roast to concentrate the sweetness; useful in place of sweet chutneys.

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29Tomatoes

Non-starchy vegetables

Lycopene source with a very low glycaemic load.

Cooking tomatoes with oil increases lycopene availability, a carotenoid studied in cardiovascular risk.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 3.9 g per 100 g
Fibre: 1.2 g per 100 g
Portion: 80 g, around one medium tomato
Key nutrients: Lycopene, vitamin C, potassium
Why it helps: Contributes to the dietary pattern associated with lower cardiovascular risk, the leading complication in diabetes.
Evidence: Moderate. Lycopene and cardiovascular outcomes rest largely on cohort and mechanistic evidence rather than definitive trials.
Caution: Tinned tomato products vary in added salt and sugar; check labels.
Preparation: Cook slowly with olive oil rather than eating only raw.

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30Cucumber

Non-starchy vegetables

Almost entirely water; useful for volume and hydration.

Cucumber contributes bulk to meals and snacks with virtually no energy or carbohydrate.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 1.9 g per 100 g
Fibre: 0.5 g per 100 g
Portion: 80 g
Key nutrients: Water, potassium, small amounts of vitamin K
Why it helps: Displaces crisps and crackers as a vehicle for dips, removing refined carbohydrate from snacking.
Evidence: Strong as displacement; direct metabolic benefits beyond this are not established.
Caution: None of significance.
Preparation: Cut into batons and serve with hummus or a yoghurt dip.

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31Mushrooms

Non-starchy vegetables

Savoury depth for very little carbohydrate.

Mushrooms deliver umami that reduces the need for salt and sugar in cooking, and contain beta-glucans.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 3.3 g per 100 g
Fibre: 1 g per 100 g
Portion: 80 g
Key nutrients: B vitamins, selenium, beta-glucans, vitamin D if UV exposed
Why it helps: Substitutes for part of a meat portion and adds savour without affecting glucose.
Evidence: Strong for glycaemic neutrality. Metabolic claims for mushroom beta-glucans in humans are preliminary.
Caution: None of significance for common cultivated varieties.
Preparation: Dry-fry first to drive off water, then add fat and seasoning.

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32Cabbage

Non-starchy vegetables

Cheap, keeps well, and carries useful fibre.

Cabbage is among the most economical ways to add fibre volume to a plate.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 5.8 g per 100 g
Fibre: 2.5 g per 100 g
Portion: 80 g
Key nutrients: Vitamin C, vitamin K, folate, glucosinolates
Why it helps: High-volume, low-energy food that supports the calorie reduction underpinning weight-related remission.
Evidence: Strong. Weight loss of 10 to 15 kg can induce type 2 diabetes remission in a substantial minority, shown in randomised trials; high-volume vegetables assist that.
Caution: Keep vitamin K intake steady on warfarin.
Preparation: Shred and stir-fry quickly, or ferment as sauerkraut.

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33Asparagus

Non-starchy vegetables

Inulin-containing vegetable with negligible glycaemic effect.

Asparagus contains inulin, a fermentable fibre that feeds beneficial colonic bacteria.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 3.9 g per 100 g
Fibre: 2.1 g per 100 g
Portion: 80 g, around 5 spears
Key nutrients: Inulin, folate, vitamin K, vitamin C
Why it helps: Provides prebiotic fibre linked in trials to modest improvements in insulin sensitivity.
Evidence: Moderate. Inulin trials show small but repeatable metabolic effects; the size of the effect is modest.
Caution: May cause bloating in those with irritable bowel syndrome.
Preparation: Griddle or roast with olive oil; avoid long boiling.

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34Brussels sprouts

Non-starchy vegetables

High fibre for a small portion.

Sprouts carry more fibre per gram than most brassicas and a substantial vitamin C content.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 9 g per 100 g
Fibre: 3.8 g per 100 g
Portion: 80 g, around 8 sprouts
Key nutrients: Vitamin C, vitamin K, folate, glucosinolates
Why it helps: Contributes meaningfully to the daily fibre target, which is associated with better glycaemic control.
Evidence: Strong. Higher fibre intake is consistently associated with lower HbA1c and lower diabetes incidence, with supporting trial evidence.
Caution: Vitamin K content matters for those on warfarin.
Preparation: Halve and roast rather than boil; finish with lemon.

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35Okra

Non-starchy vegetables

Viscous fibre that slows carbohydrate absorption.

The mucilage in okra behaves like other soluble fibres, forming a gel that slows gastric emptying.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 7 g per 100 g
Fibre: 3.2 g per 100 g
Portion: 80 g
Key nutrients: Soluble fibre, folate, vitamin C, magnesium
Why it helps: Eaten with a starchy meal, the soluble fibre lowers the glucose peak.
Evidence: Moderate. Small trials suggest a glucose-lowering effect; claims of okra water as a treatment are not supported and should not replace medication.
Caution: Okra preparations may interact with metformin absorption in animal studies; keep intake as food rather than concentrated extract.
Preparation: Cook quickly at high heat, or use in stews where the texture suits.

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36Avocado

Fruits

The one fruit that is mostly fat rather than carbohydrate.

Avocado's monounsaturated fat and fibre give it a negligible glycaemic effect, unusual for a fruit.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 9 g per 100 g, of which 7 g is fibre
Fibre: 6.7 g per 100 g
Portion: Half a medium avocado, around 70 g
Key nutrients: Monounsaturated fat, potassium, folate, vitamin E
Why it helps: Replacing butter or refined carbohydrate with avocado improves lipid profile and adds satiety without glycaemic cost.
Evidence: Moderate to strong. Randomised trials show improved lipid measures when monounsaturated fat replaces saturated fat or refined carbohydrate.
Caution: Energy dense; portion matters if weight loss is the goal. High potassium, relevant in advanced kidney disease.
Preparation: Use in place of butter on bread, or as the fat element in a salad.

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37Blueberries

Fruits

The berry with the most consistent cohort evidence in diabetes.

Anthocyanin-rich berries are repeatedly associated with lower diabetes incidence in large cohorts.

Glycaemic index: Low, approximately 53
Glycaemic load: Low, about 5 per 80 g
Carbohydrate: 14 g per 100 g
Fibre: 2.4 g per 100 g
Portion: 80 g, around a handful
Key nutrients: Anthocyanins, vitamin C, manganese, fibre
Why it helps: Whole berries are associated with lower incident type 2 diabetes and improved insulin sensitivity in some trials.
Evidence: Moderate to strong. Cohort associations are consistent across large studies; small RCTs support an insulin sensitivity effect.
Caution: The association holds for whole fruit, not juice. Juice is associated with the opposite direction of effect.
Preparation: Eat whole, fresh or frozen. Add to yoghurt rather than to sweetened cereal.

Food

38Strawberries

Fruits

Very low glycaemic load for a satisfying portion.

Strawberries provide sweetness with a low sugar content by weight, useful in place of desserts.

Glycaemic index: Low, approximately 40
Glycaemic load: Very low, about 2 per 80 g
Carbohydrate: 7.7 g per 100 g
Fibre: 2 g per 100 g
Portion: 80 g, around 7 medium berries
Key nutrients: Vitamin C, anthocyanins, folate, manganese
Why it helps: Satisfies a desire for sweetness at a fraction of the glycaemic cost of a dessert.
Evidence: Strong for the glycaemic load; cohort evidence for berries and diabetes is supportive.
Caution: None of significance.
Preparation: Serve with plain Greek yoghurt and a little cinnamon.

Food

39Raspberries

Fruits

The highest fibre-to-sugar ratio of the common fruits.

Nearly half of the carbohydrate in raspberries is fibre, which is exceptional among fruits.

Glycaemic index: Low, approximately 32
Glycaemic load: Very low, about 2 per 80 g
Carbohydrate: 12 g per 100 g, of which 6.5 g is fibre
Fibre: 6.5 g per 100 g
Portion: 80 g
Key nutrients: Fibre, vitamin C, anthocyanins, manganese
Why it helps: Delivers a substantial fibre dose with minimal available sugar.
Evidence: Strong for composition; berry and diabetes associations from cohorts are supportive.
Caution: None of significance.
Preparation: Frozen raspberries retain the profile and cost far less out of season.

Food

40Cherries

Fruits

Low glycaemic index and a source of anthocyanins.

Sour and sweet cherries both sit low on the glycaemic index despite tasting sweet.

Glycaemic index: Low, approximately 22 to 25
Glycaemic load: Low, about 3 per 80 g
Carbohydrate: 12 g per 100 g
Fibre: 1.6 g per 100 g
Portion: 80 g, around 14 cherries
Key nutrients: Anthocyanins, potassium, vitamin C
Why it helps: Satisfying sweetness at a low glycaemic load.
Evidence: Strong for glycaemic index. Claims about cherry juice and metabolic outcomes are not well established.
Caution: Dried and juiced cherries behave very differently and carry a much higher load.
Preparation: Eat fresh and whole; avoid glacé or syrup-packed versions.

Food

41Apples

Fruits

Pectin-rich fruit with a repeatedly demonstrated inverse association.

Apple pectin is a soluble fibre that slows gastric emptying and modestly lowers LDL cholesterol.

Glycaemic index: Low, approximately 36
Glycaemic load: Low, about 5 per medium apple
Carbohydrate: 14 g per 100 g
Fibre: 2.4 g per 100 g
Portion: One medium apple, around 130 g
Key nutrients: Pectin, quercetin, vitamin C, potassium
Why it helps: Whole apple intake is associated with lower diabetes incidence; the pectin also supports lipid management.
Evidence: Moderate to strong. Cohort evidence is consistent for whole fruit; pectin's lipid effect has trial support.
Caution: Eat with the skin, where most of the fibre and quercetin sit. Apple juice does not carry the same association.
Preparation: Slice and pair with a few nuts or nut butter to flatten the glucose response further.

Food

42Pears

Fruits

High fibre and low glycaemic index for a sweet fruit.

Pears carry more fibre than apples by weight, much of it in the gritty stone cells and skin.

Glycaemic index: Low, approximately 38
Glycaemic load: Low, about 5 per medium pear
Carbohydrate: 15 g per 100 g
Fibre: 3.1 g per 100 g
Portion: One medium pear, around 150 g
Key nutrients: Fibre, copper, vitamin C, potassium
Why it helps: Fibre-rich sweetness that supports the daily fibre target.
Evidence: Strong for composition and glycaemic index; supportive cohort evidence for whole fruit.
Caution: Very ripe pears have a higher glycaemic response than firm ones.
Preparation: Eat with the skin on; poach in spiced water rather than syrup.

Food

43Oranges

Fruits

Whole citrus with intact fibre; markedly different from juice.

The segment membranes hold soluble fibre that juice removes entirely, which is why the two behave so differently.

Glycaemic index: Low, approximately 43
Glycaemic load: Low, about 5 per medium orange
Carbohydrate: 12 g per 100 g
Fibre: 2.4 g per 100 g
Portion: One medium orange, around 130 g
Key nutrients: Vitamin C, folate, hesperidin, fibre
Why it helps: Whole citrus carries a low glycaemic load and is associated with favourable outcomes, unlike juice.
Evidence: Strong for the whole fruit versus juice distinction, which is one of the clearest findings in this area.
Caution: Grapefruit interacts with several medicines including some statins; oranges do not, but check with a pharmacist.
Preparation: Eat in segments. If juice is wanted, dilute heavily and treat it as a treat, not a daily drink.

Food

44Kiwi fruit

Fruits

Very high vitamin C with a low glycaemic load.

Kiwi provides more vitamin C per gram than citrus and contains actinidin, an enzyme aiding protein digestion.

Glycaemic index: Low, approximately 50
Glycaemic load: Low, about 6 per two fruit
Carbohydrate: 15 g per 100 g
Fibre: 3 g per 100 g
Portion: Two small kiwi fruit, around 150 g
Key nutrients: Vitamin C, vitamin K, potassium, fibre
Why it helps: A sweet fruit portion with a modest glycaemic load and a large micronutrient return.
Evidence: Strong for glycaemic values; whole fruit cohort evidence supportive.
Caution: Kiwi allergy is not uncommon, particularly with latex sensitivity.
Preparation: Eat with a spoon; the skin is edible and adds fibre if the fruit is washed.

Food

45Guava

Fruits

Exceptional fibre content for a tropical fruit.

Guava carries several times the fibre of most tropical fruits, which moderates its glycaemic effect.

Glycaemic index: Low, approximately 31
Glycaemic load: Low, about 4 per 100 g
Carbohydrate: 14 g per 100 g
Fibre: 5.4 g per 100 g
Portion: 100 g, around one medium guava
Key nutrients: Vitamin C, lycopene, fibre, potassium
Why it helps: One of the better tropical fruit choices for glycaemic load, contrary to the assumption that tropical fruit must be avoided.
Evidence: Moderate to strong. Glycaemic index data are consistent; some small trials suggest a glucose-lowering effect of guava, but these are not definitive.
Caution: Eating with the skin adds fibre; remove hard seeds if they cause discomfort.
Preparation: Eat fresh and whole rather than as nectar or juice.

Food

46Peaches

Fruits

Stone fruit with a low glycaemic index.

Peaches and nectarines share a low glycaemic profile despite their sweetness.

Glycaemic index: Low, approximately 42
Glycaemic load: Low, about 5 per medium fruit
Carbohydrate: 10 g per 100 g
Fibre: 1.5 g per 100 g
Portion: One medium peach, around 150 g
Key nutrients: Vitamin C, vitamin A, potassium, polyphenols
Why it helps: A modest glycaemic load and a satisfying portion size.
Evidence: Strong for glycaemic index; supportive whole fruit cohort evidence.
Caution: Tinned peaches in syrup carry a far higher load; choose those in natural juice or fresh.
Preparation: Griddle halves briefly to concentrate flavour without adding sugar.

Food

47Plums

Fruits

Low glycaemic index with useful polyphenol content.

Plums combine sorbitol and polyphenols with a modest sugar content.

Glycaemic index: Low, approximately 39
Glycaemic load: Low, about 3 per two plums
Carbohydrate: 11 g per 100 g
Fibre: 1.4 g per 100 g
Portion: Two medium plums, around 130 g
Key nutrients: Polyphenols, vitamin C, potassium
Why it helps: A convenient low-load fruit portion.
Evidence: Strong for glycaemic values.
Caution: Prunes, the dried form, carry several times the load per gram and should be portioned carefully.
Preparation: Eat fresh; halve and roast with cinnamon for a dessert alternative.

Food

48Grapefruit

Fruits

Low glycaemic index, but with a genuine drug interaction to respect.

Grapefruit inhibits an intestinal enzyme that metabolises many medicines, which can raise drug levels.

Glycaemic index: Low, approximately 25
Glycaemic load: Very low, about 3 per half fruit
Carbohydrate: 8 g per 100 g
Fibre: 1.1 g per 100 g
Portion: Half a medium grapefruit
Key nutrients: Vitamin C, naringin, potassium, fibre
Why it helps: One of the lowest glycaemic fruits available.
Evidence: Strong for glycaemic index. The interaction with CYP3A4-metabolised drugs is well documented and clinically important.
Caution: Interacts with several statins, some calcium channel blockers and other medicines. Check with a pharmacist before making it a habit.
Preparation: Eat in segments without added sugar; the bitterness fades as the palate adjusts.

Food

49Apricots, fresh

Fruits

Small portions, low load, high carotenoid content.

Fresh apricots differ sharply from the dried form in both portion size and glycaemic load.

Glycaemic index: Low, approximately 34
Glycaemic load: Very low, about 3 per three apricots
Carbohydrate: 11 g per 100 g
Fibre: 2 g per 100 g
Portion: Three fresh apricots, around 120 g
Key nutrients: Beta-carotene, vitamin C, potassium, fibre
Why it helps: A low-load fruit choice with carotenoids relevant to eye health.
Evidence: Strong for glycaemic values. Carotenoid intake and retinopathy outcomes are not established; screening remains essential.
Caution: Dried apricots concentrate the sugar roughly fivefold by weight.
Preparation: Eat fresh in season; poach gently rather than stewing with sugar.

Food

50Pomegranate seeds

Fruits

Polyphenol-dense with a moderate load in sensible portions.

The arils carry punicalagins, polyphenols studied for vascular effects, alongside their fibre.

Glycaemic index: Low, approximately 35
Glycaemic load: Low, about 6 per 80 g
Carbohydrate: 19 g per 100 g
Fibre: 4 g per 100 g
Portion: 80 g of seeds, around half a fruit
Key nutrients: Punicalagins, vitamin C, vitamin K, potassium
Why it helps: Contributes polyphenols associated with improved endothelial function, relevant to vascular complications.
Evidence: Moderate. Small trials suggest blood pressure and endothelial benefits; the evidence is promising rather than conclusive, and juice trials often use concentrated doses.
Caution: Pomegranate juice may interact with some medicines; the whole seeds in food quantities are the safer form.
Preparation: Scatter the seeds over salads and yoghurt rather than drinking the juice.

Food

51Almonds

Nuts and seeds

The most studied nut for post-meal glucose control.

Almonds eaten with or before a carbohydrate meal reduce the glucose peak, an effect reproduced across several trials.

Glycaemic index: Very low, approximately 15
Glycaemic load: Negligible per 30 g
Carbohydrate: 22 g per 100 g, much of it poorly absorbed
Fibre: 12.5 g per 100 g
Portion: 30 g, around 23 almonds
Key nutrients: Vitamin E, magnesium, monounsaturated fat, plant protein
Why it helps: Lowers the glycaemic response of an accompanying meal and improves LDL cholesterol.
Evidence: Strong. Randomised crossover trials show consistent post-prandial glucose reduction; meta-analyses support the lipid effect.
Caution: Energy dense at roughly 600 kcal per 100 g. Weigh the portion rather than eating from the bag.
Preparation: Eat plain or lightly toasted; avoid honey-roasted and heavily salted versions.

Food

52Walnuts

Nuts and seeds

The main plant source of long-chain omega-3 precursor.

Walnuts carry alpha-linolenic acid, and appear in the trial evidence supporting Mediterranean dietary patterns.

Glycaemic index: Very low
Glycaemic load: Negligible per 30 g
Carbohydrate: 14 g per 100 g
Fibre: 6.7 g per 100 g
Portion: 30 g, around 9 halves
Key nutrients: Alpha-linolenic acid, polyphenols, magnesium, copper
Why it helps: Associated with improved endothelial function and lower cardiovascular event rates within a Mediterranean pattern.
Evidence: Strong at the dietary pattern level, from large randomised trials of Mediterranean diets supplemented with nuts; walnut-specific effects are more modest.
Caution: Energy dense. Tree nut allergy can be severe.
Preparation: Add to salads and yoghurt; store cool as the oils go rancid quickly.

Food

53Pistachios

Nuts and seeds

Shown to reduce the glycaemic response of a co-eaten meal.

Pistachios eaten alongside a high-carbohydrate food noticeably flatten the glucose curve.

Glycaemic index: Very low, approximately 15
Glycaemic load: Negligible per 30 g
Carbohydrate: 28 g per 100 g
Fibre: 10 g per 100 g
Portion: 30 g, around 49 kernels
Key nutrients: Lutein, zeaxanthin, potassium, monounsaturated fat
Why it helps: Reduces post-meal glucose when eaten with carbohydrate; shelling them also slows the rate of eating.
Evidence: Strong. Multiple randomised crossover trials show a dose-related reduction in post-prandial glucose.
Caution: Salted varieties carry substantial sodium. Buy in shell to moderate intake.
Preparation: Buy unsalted in shell and eat as the snack that replaces biscuits.

Food

54Chia seeds

Nuts and seeds

Forms a gel that slows carbohydrate absorption.

Chia absorbs many times its weight in water, forming a viscous gel that delays gastric emptying.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 42 g per 100 g, of which 34 g is fibre
Fibre: 34 g per 100 g
Portion: 15 g, around 2 tablespoons
Key nutrients: Soluble fibre, alpha-linolenic acid, calcium, magnesium
Why it helps: Added to a meal, the gel lowers the glucose peak; also a substantial fibre contribution in a small portion.
Evidence: Moderate to strong. Trials show reduced post-prandial glucose when chia is baked into or eaten with carbohydrate foods.
Caution: Always take with adequate fluid. Dry seeds can swell in the oesophagus if swallowed with too little water.
Preparation: Soak in milk or water for at least twenty minutes; use as a pudding base in place of dessert.

Food

55Flaxseed, ground

Nuts and seeds

Lignan-rich soluble fibre; must be ground to be useful.

Whole flaxseed passes through undigested, so grinding is essential for any benefit.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 29 g per 100 g, of which 27 g is fibre
Fibre: 27 g per 100 g
Portion: 15 g ground, around 2 tablespoons
Key nutrients: Lignans, alpha-linolenic acid, soluble fibre, magnesium
Why it helps: Modest reductions in fasting glucose and HbA1c have been reported, alongside LDL cholesterol reduction.
Evidence: Moderate. Meta-analyses of small trials show modest glycaemic and lipid effects; individual trials are variable in quality.
Caution: Grind fresh and store cold. May affect absorption of medicines taken at the same time; separate by a couple of hours.
Preparation: Stir into porridge or yoghurt; use in baking in place of some flour.

Food

56Pumpkin seeds

Nuts and seeds

Dense in magnesium, a mineral tied to insulin sensitivity.

Magnesium is a cofactor in insulin signalling, and low status is common in type 2 diabetes.

Glycaemic index: Very low
Glycaemic load: Negligible per 30 g
Carbohydrate: 11 g per 100 g
Fibre: 6 g per 100 g
Portion: 30 g, around 3 tablespoons
Key nutrients: Magnesium, zinc, iron, plant protein
Why it helps: Contributes substantially to magnesium intake, which cohort data associate with lower diabetes incidence.
Evidence: Moderate. The cohort association for magnesium is consistent; supplementation trials show smaller and less certain effects.
Caution: Energy dense. Choose unsalted.
Preparation: Toast lightly and scatter over salads and soups.

Food

57Sunflower seeds

Nuts and seeds

Inexpensive vitamin E and magnesium source.

A cheaper alternative to nuts with a similar glycaemic profile.

Glycaemic index: Very low
Glycaemic load: Negligible per 30 g
Carbohydrate: 20 g per 100 g
Fibre: 8.6 g per 100 g
Portion: 30 g
Key nutrients: Vitamin E, magnesium, selenium, linoleic acid
Why it helps: A low-cost way to add unsaturated fat and fibre to meals in place of refined snacks.
Evidence: Moderate. Benefits follow from established evidence on nuts and seeds rather than sunflower-specific trials.
Caution: Salted varieties carry high sodium.
Preparation: Toast in a dry pan; add to salads and homemade breads.

Food

58Cashews

Nuts and seeds

Higher carbohydrate than other nuts, but still low glycaemic.

Cashews carry more starch than almonds or walnuts, so the portion matters more.

Glycaemic index: Low, approximately 22
Glycaemic load: Low, about 3 per 30 g
Carbohydrate: 30 g per 100 g
Fibre: 3.3 g per 100 g
Portion: 30 g, around 18 kernels
Key nutrients: Magnesium, copper, monounsaturated fat, plant protein
Why it helps: A satisfying snack with a low glycaemic load, though less favourable than almonds or walnuts.
Evidence: Moderate. Trials of cashews specifically show neutral to modestly favourable metabolic effects.
Caution: Higher carbohydrate than other nuts; keep to a measured portion.
Preparation: Buy plain, not honey roasted.

Food

59Peanut butter, no added sugar

Nuts and seeds

Blunts the glucose rise from bread when spread on it.

The fat and protein slow gastric emptying, reducing the glucose peak from the bread beneath.

Glycaemic index: Very low
Glycaemic load: Negligible per 20 g
Carbohydrate: 20 g per 100 g
Fibre: 6 g per 100 g
Portion: 20 g, around one tablespoon
Key nutrients: Monounsaturated fat, plant protein, niacin, magnesium
Why it helps: Converts a high-glycaemic slice of toast into a moderate one.
Evidence: Strong. The fat and protein effect on gastric emptying and post-prandial glucose is well established.
Caution: Choose brands with only peanuts and salt. Many contain palm oil and added sugar.
Preparation: Spread on wholegrain rye rather than white bread.

Food

60Tahini

Nuts and seeds

Sesame paste with calcium and no meaningful sugar.

Tahini contributes unsaturated fat and calcium, and thickens sauces without flour or sugar.

Glycaemic index: Very low
Glycaemic load: Negligible per 20 g
Carbohydrate: 21 g per 100 g
Fibre: 9 g per 100 g
Portion: 20 g, around one tablespoon
Key nutrients: Calcium, sesamin, unsaturated fat, iron
Why it helps: Replaces sweet or starch-thickened dressings with a fat and fibre based one.
Evidence: Moderate. Sesame trials suggest modest lipid and glycaemic benefits; the evidence base is small.
Caution: Sesame allergy is increasingly recognised and can be serious.
Preparation: Thin with lemon juice and water for a dressing in place of shop-bought sauces.

Food

61Salmon

Fish and seafood

The reference oily fish for long-chain omega-3 intake.

Long-chain omega-3 fatty acids reduce triglycerides, a lipid abnormality common in type 2 diabetes.

Glycaemic index: None, carbohydrate free
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 140 g cooked fillet
Key nutrients: EPA and DHA, vitamin D, selenium, complete protein
Why it helps: Lowers triglycerides and supports the dietary pattern associated with reduced cardiovascular events.
Evidence: Strong for triglyceride reduction from randomised trials. Evidence that fish oil supplements prevent cardiovascular events in diabetes is mixed, so eat the fish rather than relying on capsules.
Caution: Those on anticoagulants should discuss high-dose omega-3 supplements with a clinician; fish as food is not a concern.
Preparation: Bake, grill or poach. Avoid battered and deep-fried preparations.

Food

62Mackerel

Fish and seafood

Inexpensive and among the richest in omega-3.

Tinned mackerel offers the same fatty acid profile as fresh at a fraction of the price.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 140 g cooked, or one tin drained
Key nutrients: EPA and DHA, vitamin D, vitamin B12, selenium
Why it helps: A practical, affordable route to the two portions of oily fish a week that guidelines recommend.
Evidence: Strong for the lipid effect; guideline recommendations for oily fish rest on consistent cohort and trial evidence.
Caution: Tinned versions in brine carry added salt; those in olive oil or spring water are preferable.
Preparation: Grill fresh fillets with lemon, or flake tinned fish through salads.

Food

63Sardines

Fish and seafood

Omega-3, calcium and vitamin D in one inexpensive tin.

Eaten with the soft bones, sardines are one of the few substantial non-dairy calcium sources.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: One tin, around 90 g drained
Key nutrients: EPA and DHA, calcium, vitamin D, vitamin B12
Why it helps: Supports the oily fish target and contributes calcium and vitamin D at low cost.
Evidence: Strong for the omega-3 and micronutrient content; the clinical benefit follows the oily fish evidence base.
Caution: Watch added salt in brine or sauce varieties.
Preparation: Mash on wholegrain toast with lemon and black pepper.

Food

64Cod

Fish and seafood

Lean protein with no carbohydrate.

White fish provides high-quality protein with very little fat, useful when energy restriction is the aim.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 140 g cooked fillet
Key nutrients: Complete protein, iodine, selenium, vitamin B12
Why it helps: High satiety per calorie, supporting the weight reduction that most improves insulin sensitivity.
Evidence: Strong. Protein's satiety effect is well established in controlled feeding studies.
Caution: Battered and fried preparations reverse the benefit entirely.
Preparation: Bake with herbs, or poach in stock with vegetables.

Food

65Prawns

Fish and seafood

Very high protein, negligible carbohydrate.

Dietary cholesterol in shellfish has little effect on blood cholesterol for most people, a point long misunderstood.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 100 g cooked
Key nutrients: Complete protein, selenium, iodine, vitamin B12
Why it helps: A quick, filling protein source that does not affect blood glucose.
Evidence: Strong for glycaemic neutrality. The reassessment of dietary cholesterol is now reflected in most national guidelines.
Caution: Shellfish allergy can be severe. Prawns in breadcrumbs or batter are a different food entirely.
Preparation: Griddle with garlic and chilli; add to vegetable stir-fries.

Food

66Mussels

Fish and seafood

Exceptional iron and B12 content for the price.

Mussels carry more iron per portion than red meat, with far less saturated fat.

Glycaemic index: None, though a small natural glycogen content
Glycaemic load: Negligible
Carbohydrate: 3 g per 100 g
Fibre: 0 g
Portion: 100 g cooked meat, around a small bowl in shell
Key nutrients: Iron, vitamin B12, selenium, omega-3
Why it helps: Nutrient-dense protein with minimal glycaemic effect and a favourable fat profile.
Evidence: Strong for composition; benefits follow the seafood evidence base.
Caution: Must be fresh and properly cooked. Avoid those that stay closed after cooking.
Preparation: Steam with white wine, garlic and parsley; skip the cream and bread.

Food

67Tinned tuna in spring water

Fish and seafood

Storecupboard protein with no carbohydrate.

A practical protein for quick meals, though lower in omega-3 than oily fish.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: One tin, around 100 g drained
Key nutrients: Complete protein, selenium, vitamin D, vitamin B12
Why it helps: Adds protein to salads and reduces the proportion of the meal that is carbohydrate.
Evidence: Strong for the protein and satiety effect. Note tinned tuna carries much less omega-3 than fresh or oily fish.
Caution: Mercury accumulates in larger tuna; pregnant women in particular should follow national limits on intake.
Preparation: Use in salads with olive oil rather than mayonnaise-heavy dressings.

Food

68Chicken breast, skinless

Meat and eggs

Lean protein that displaces carbohydrate from the plate.

Protein at a meal slows gastric emptying and increases satiety, both useful for glycaemic control.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 120 g cooked
Key nutrients: Complete protein, niacin, vitamin B6, selenium
Why it helps: Raising the protein share of a meal lowers its glycaemic load and improves fullness.
Evidence: Strong. The satiety and post-prandial effects of protein are well established in controlled trials.
Caution: Breaded or fried preparations add substantial refined carbohydrate and fat.
Preparation: Grill, poach or roast; marinate with lemon, garlic and herbs rather than sweet sauces.

Food

69Turkey

Meat and eggs

Lean alternative to red meat with the same satiety benefit.

Substituting poultry for processed red meat is one of the better-supported dietary swaps in diabetes prevention.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 120 g cooked
Key nutrients: Complete protein, selenium, zinc, B vitamins
Why it helps: Replacing processed meat with poultry is associated with lower incident type 2 diabetes.
Evidence: Moderate to strong. The association between processed meat and diabetes incidence is consistent across large cohorts.
Caution: Deli turkey slices are often processed with added salt and nitrates; whole cuts are preferable.
Preparation: Roast whole cuts and use cold for lunches in place of processed meats.

Food

70Eggs

Meat and eggs

High satiety at breakfast, with no glycaemic effect.

An egg-based breakfast reduces intake later in the day compared with a cereal breakfast of the same calories.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0.6 g per egg
Fibre: 0 g
Portion: Two medium eggs
Key nutrients: Complete protein, choline, vitamin D, lutein, vitamin B12
Why it helps: Replacing a refined-carbohydrate breakfast with eggs lowers the morning glucose rise and improves satiety.
Evidence: Strong for the satiety and glycaemic effect. Guidance on egg limits has relaxed as dietary cholesterol has been shown to have modest effect on most people.
Caution: Some cohorts have reported higher egg intake with adverse outcomes in diabetes specifically; the evidence is mixed, so moderate intake is prudent rather than unlimited.
Preparation: Poach or boil rather than fry in butter; serve with vegetables rather than toast alone.

Food

71Greek yoghurt, plain

Dairy

The dairy product with the most consistent inverse association.

Yoghurt intake is repeatedly associated with lower incident type 2 diabetes across large cohorts, an association not seen for all dairy.

Glycaemic index: Low, approximately 11
Glycaemic load: Very low, about 2 per 150 g
Carbohydrate: 4 g per 100 g
Fibre: 0 g
Portion: 150 g
Key nutrients: Protein, calcium, live cultures, vitamin B12
Why it helps: Associated with reduced diabetes incidence; the protein content also flattens the glucose response of fruit eaten with it.
Evidence: Moderate to strong. The cohort association for yoghurt is one of the more consistent in nutrition, though causation is not proven.
Caution: Flavoured and fruit yoghurts often contain 12 to 20 g of added sugar per pot. Buy plain and add fruit.
Preparation: Use in place of cream and mayonnaise; sweeten with berries and cinnamon, not honey.

Food

72Kefir

Dairy

Fermented milk with a broader culture range than yoghurt.

Kefir contains a wider set of bacteria and yeasts than most yoghurts, and lower lactose after fermentation.

Glycaemic index: Low
Glycaemic load: Low, about 4 per 200 ml
Carbohydrate: 4 g per 100 ml
Fibre: 0 g
Portion: 200 ml
Key nutrients: Protein, calcium, live cultures, vitamin B12
Why it helps: Small trials report modest improvements in fasting glucose and HbA1c with regular kefir intake.
Evidence: Moderate. Trials are small and heterogeneous; treat the effect as modest and supportive rather than therapeutic.
Caution: Often better tolerated in lactose intolerance, but not always. Avoid sweetened versions.
Preparation: Drink plain, or use as the liquid in smoothies with berries.

Food

73Cottage cheese

Dairy

Very high protein for its calories.

Cottage cheese provides slow-digesting casein protein, useful for prolonged satiety.

Glycaemic index: Low, approximately 10
Glycaemic load: Very low
Carbohydrate: 3 g per 100 g
Fibre: 0 g
Portion: 150 g
Key nutrients: Casein protein, calcium, phosphorus, vitamin B12
Why it helps: High protein density supports appetite control during weight reduction.
Evidence: Strong for protein satiety; the weight pathway is the primary mechanism.
Caution: Sodium content varies considerably between brands.
Preparation: Serve with tomato, cucumber and black pepper as a savoury snack.

Food

74Unsweetened soya milk

Dairy

The plant milk closest to dairy in protein content.

Most plant milks carry little protein; soya is the exception, at roughly the level of cow's milk.

Glycaemic index: Low, approximately 34
Glycaemic load: Low, about 3 per 200 ml
Carbohydrate: 1 to 3 g per 100 ml unsweetened
Fibre: 0.5 g per 100 ml
Portion: 200 ml
Key nutrients: Plant protein, isoflavones, fortified calcium and vitamin B12
Why it helps: A low-glycaemic milk substitute that retains meaningful protein, unlike rice or oat milk.
Evidence: Moderate to strong. Composition is clear; the protein advantage over other plant milks is substantial.
Caution: Rice milk in particular is high glycaemic and a poor substitute here. Choose fortified, unsweetened soya.
Preparation: Use in porridge and coffee; check the label says unsweetened.

Food

75Hard cheese in small portions

Dairy

No glycaemic effect, but portion discipline matters.

Cheese contains almost no carbohydrate, though it is energy dense and salty.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0.1 to 1 g per 100 g
Fibre: 0 g
Portion: 30 g, around the size of a small matchbox
Key nutrients: Calcium, protein, vitamin A, vitamin B12
Why it helps: Adds satiety and flavour without affecting blood glucose; useful with fruit as a balanced snack.
Evidence: Strong for glycaemic neutrality. Cohort evidence on cheese and diabetes is neutral to mildly favourable, which surprises many.
Caution: High in saturated fat and salt. Portion is the controlling factor, particularly with hypertension.
Preparation: Weigh the portion once to learn what 30 g looks like.

Food

76Extra virgin olive oil

Fats and oils

The fat with the strongest randomised trial evidence in this field.

Mediterranean dietary patterns rich in extra virgin olive oil have been tested in large randomised trials with cardiovascular endpoints.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: One to two tablespoons daily as the main cooking and dressing fat
Key nutrients: Monounsaturated fat, oleocanthal, polyphenols, vitamin E
Why it helps: Associated with reduced cardiovascular events and, in trial evidence, reduced incidence of type 2 diabetes.
Evidence: Strong. This is among the few dietary interventions with large randomised trials reporting hard clinical endpoints.
Caution: Still 120 kcal per tablespoon. Use it to replace butter and other fats, not in addition to them.
Preparation: Buy extra virgin, keep it dark and cool, and use it raw on vegetables as well as for cooking.

Food

77Rapeseed oil, cold pressed

Fats and oils

A practical, affordable unsaturated cooking oil.

Rapeseed oil carries a favourable fatty acid profile and tolerates higher cooking temperatures than olive oil.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: One tablespoon
Key nutrients: Monounsaturated fat, alpha-linolenic acid, vitamin E
Why it helps: Replacing butter or palm-based fats with unsaturated oils improves the lipid profile.
Evidence: Strong. Replacing saturated with unsaturated fat lowers LDL cholesterol in controlled feeding trials.
Caution: Energy dense as with all oils.
Preparation: Use for higher-heat cooking where olive oil would smoke.

Food

78Olives

Fats and oils

A savoury snack with almost no carbohydrate.

Olives deliver the same fat profile as the oil, with fibre and a satisfying salt hit.

Glycaemic index: None
Glycaemic load: Negligible
Carbohydrate: 6 g per 100 g, mostly fibre
Fibre: 3.3 g per 100 g
Portion: 30 g, around 8 olives
Key nutrients: Monounsaturated fat, polyphenols, vitamin E, iron
Why it helps: Replaces crisps and salted snacks with an unsaturated fat source.
Evidence: Moderate. Benefit follows from the olive oil and Mediterranean pattern evidence.
Caution: High sodium, particularly relevant with hypertension or kidney disease.
Preparation: Rinse briefly to reduce salt; serve with vegetables rather than bread.

Food

79Cinnamon

Herbs, spices and flavourings

Modest glucose effect, frequently overstated.

Cinnamon has been widely promoted for glucose control, but the trial evidence is inconsistent and the effect small.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: Negligible in culinary amounts
Fibre: Negligible in culinary amounts
Portion: 1 to 2 g daily, around half a teaspoon
Key nutrients: Cinnamaldehyde, polyphenols, manganese
Why it helps: May produce a small reduction in fasting glucose; more reliably, it lets you cut added sugar from porridge and yoghurt.
Evidence: Weak to moderate. Meta-analyses conflict, with small and inconsistent effects. Its practical value is displacing sugar, not lowering glucose.
Caution: Cassia cinnamon contains coumarin, which is hepatotoxic in quantity. For daily use choose Ceylon cinnamon.
Preparation: Stir into porridge, yoghurt and coffee in place of sugar.

Food

80Turmeric

Herbs, spices and flavourings

Anti-inflammatory interest, limited human outcome evidence.

Curcumin has extensive laboratory support but poor oral bioavailability, which limits its practical effect as a food.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: Negligible in culinary amounts
Fibre: Negligible
Portion: 1 to 3 g daily in cooking
Key nutrients: Curcuminoids, manganese, iron
Why it helps: Contributes to an anti-inflammatory dietary pattern; some small trials report improved markers in prediabetes.
Evidence: Weak to moderate. Trial results are promising but small, and often use high-dose extracts rather than culinary amounts.
Caution: High-dose supplements may interact with anticoagulants and have been linked to rare liver injury. Culinary use is the safer form.
Preparation: Cook with black pepper and a little oil, both of which improve absorption.

Food

81Fenugreek seeds

Herbs, spices and flavourings

One of the better-supported traditional remedies, though not a substitute for treatment.

Fenugreek's soluble fibre and amino acid content have both been proposed as mechanisms.

Glycaemic index: None in culinary amounts
Glycaemic load: Negligible
Carbohydrate: 58 g per 100 g, much of it fibre
Fibre: 25 g per 100 g
Portion: 5 to 10 g daily, soaked
Key nutrients: Soluble fibre, 4-hydroxyisoleucine, iron, magnesium
Why it helps: Meta-analyses report reductions in fasting glucose and HbA1c, though effect sizes vary widely.
Evidence: Moderate. Better supported than most traditional remedies, but trials are small and heterogeneous. It is an adjunct, never a replacement for prescribed treatment.
Caution: May lower glucose additively with medication, raising hypoglycaemia risk. Discuss with your clinician if taking insulin or a sulfonylurea. Avoid in pregnancy.
Preparation: Soak the seeds overnight and use in cooking, or add ground to breads and curries.

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82Garlic

Herbs, spices and flavourings

Flavour that reduces reliance on salt and sugar.

Garlic's organosulphur compounds have modest effects on blood pressure and lipids in trials.

Glycaemic index: None
Glycaemic load: Negligible
Carbohydrate: 33 g per 100 g, but portions are tiny
Fibre: 2.1 g per 100 g
Portion: 1 to 2 cloves
Key nutrients: Allicin, manganese, vitamin B6, selenium
Why it helps: Small blood pressure and lipid improvements; practically, it makes low-salt cooking palatable.
Evidence: Moderate for blood pressure from meta-analyses of small trials; effects on glucose are not well established.
Caution: High-dose supplements may increase bleeding risk with anticoagulants.
Preparation: Crush and let stand for ten minutes before cooking to preserve the active compounds.

Food

83Ginger

Herbs, spices and flavourings

Modest glycaemic effect and useful culinary sweetness.

Ginger has been studied in small trials for fasting glucose and HbA1c with mixed results.

Glycaemic index: None
Glycaemic load: Negligible
Carbohydrate: 18 g per 100 g, portions tiny
Fibre: 2 g per 100 g
Portion: 2 to 3 g fresh, a thumb-tip
Key nutrients: Gingerols, manganese, vitamin B6
Why it helps: May modestly lower fasting glucose; adds warmth and sweetness without sugar.
Evidence: Weak to moderate. Meta-analyses suggest small reductions in fasting glucose, but trials are small and variable.
Caution: High doses may affect bleeding and interact with anticoagulants.
Preparation: Grate fresh into stir-fries, dressings and tea rather than buying sweetened ginger drinks.

Food

84Apple cider vinegar

Herbs, spices and flavourings

A small but reproducible effect on post-meal glucose.

Acetic acid slows gastric emptying and appears to improve muscle glucose uptake after a meal.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: One to two tablespoons diluted, taken with a meal
Key nutrients: Acetic acid
Why it helps: Taken with a carbohydrate meal, reduces the post-prandial glucose rise, typically by a modest margin.
Evidence: Moderate. Several small randomised crossover trials show a consistent direction of effect, though the magnitude is small and long-term outcome data are lacking.
Caution: Always dilute. Undiluted vinegar damages tooth enamel and can irritate the oesophagus. Caution in gastroparesis, where delayed emptying is already a problem.
Preparation: Use as a salad dressing with olive oil rather than drinking it neat.

Food

85Lemon juice

Herbs, spices and flavourings

Acidity lowers the glycaemic response of the meal it dresses.

Like vinegar, citric and other acids slow gastric emptying enough to blunt the glucose peak.

Glycaemic index: None
Glycaemic load: Negligible
Carbohydrate: 6 g per 100 ml
Fibre: 0 g
Portion: Juice of half a lemon
Key nutrients: Vitamin C, citric acid, flavonoids
Why it helps: Reduces both salt requirement and the glycaemic response of a starchy meal.
Evidence: Moderate. The acid effect on gastric emptying is established; the meal-level effect is modest.
Caution: Erosive to enamel if taken neat and frequently.
Preparation: Dress vegetables, pulses and fish generously; use in place of salt.

Food

86Chilli

Herbs, spices and flavourings

Capsaicin adds heat and slows the pace of eating.

Beyond any direct metabolic effect, chilli reliably slows how quickly a meal is eaten.

Glycaemic index: None
Glycaemic load: Negligible
Carbohydrate: Negligible in culinary amounts
Fibre: Negligible
Portion: To taste
Key nutrients: Capsaicin, vitamin C, carotenoids
Why it helps: Slower eating is associated with reduced intake; capsaicin also has small effects on energy expenditure.
Evidence: Weak to moderate. The thermogenic effect is real but small. The eating-rate effect is more practically useful.
Caution: May aggravate reflux in some people.
Preparation: Add fresh or dried to vegetable dishes and pulses.

Food

87Unsweetened green tea

Drinks

Zero glycaemic load, modest cohort associations.

Green tea catechins have been studied extensively, with small effects on glucose measures.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 2 to 3 cups daily
Key nutrients: Catechins, particularly EGCG, small amounts of caffeine
Why it helps: Replaces sweetened drinks entirely; cohort evidence associates higher intake with modestly lower diabetes incidence.
Evidence: Moderate. Cohort associations are reasonably consistent; intervention trials show small effects on fasting glucose.
Caution: High-dose green tea extract supplements have been linked to liver injury. Drinking the tea is the safe form.
Preparation: Brew at around 80°C to avoid bitterness; drink without sugar.

Food

88Coffee, unsweetened

Drinks

One of the most consistent inverse associations in the cohort literature.

Both caffeinated and decaffeinated coffee show the association, suggesting the effect is not from caffeine.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 2 to 4 cups daily
Key nutrients: Chlorogenic acids, caffeine, potassium, niacin
Why it helps: Higher coffee consumption is associated with substantially lower incident type 2 diabetes across many cohorts.
Evidence: Strong at the association level, remarkably consistent across populations. Causation is not established, and it does not lower glucose acutely.
Caution: Added sugar, syrups and cream reverse the benefit. Caffeine may worsen sleep, itself a risk factor. Some people experience a short-term glucose rise after caffeine.
Preparation: Drink black or with a little milk; treat flavoured coffee shop drinks as desserts.

Food

89Water

Drinks

The single most valuable substitution available.

Replacing sugar-sweetened drinks with water removes the most concentrated source of rapid carbohydrate from most diets.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 1.5 to 2 litres daily, adjusted for climate and activity
Key nutrients: None, though some mineral waters contribute magnesium and calcium
Why it helps: Substituting water for sugary drinks is associated with meaningfully lower diabetes risk and supports weight reduction.
Evidence: Strong. The association between sugar-sweetened beverages and type 2 diabetes is among the most consistent findings in nutritional epidemiology.
Caution: Fluid needs differ in heart and kidney disease; take individual advice.
Preparation: Add lemon, cucumber or mint if plain water is unappealing.

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90Hibiscus tea

Drinks

Caffeine free with modest blood pressure evidence.

Hibiscus has been tested in small randomised trials for blood pressure, with consistent modest reductions.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g unsweetened
Fibre: 0 g
Portion: 2 cups daily
Key nutrients: Anthocyanins, organic acids, vitamin C
Why it helps: A palatable unsweetened alternative to soft drinks with possible modest blood pressure benefit.
Evidence: Moderate for blood pressure from small trials. Glycaemic effects are not established.
Caution: May interact with some antihypertensives and diuretics. Not advised in pregnancy.
Preparation: Steep dried calyces and drink hot or chilled, without sugar.

Food

91Sweet potato, boiled

Starchy vegetables

Lower glycaemic than white potato, but only when boiled.

Cooking method changes sweet potato's glycaemic index dramatically; baking or roasting raises it sharply.

Glycaemic index: Boiled approximately 46, baked approximately 94
Glycaemic load: Medium, about 11 per 150 g boiled
Carbohydrate: 20 g per 100 g boiled
Fibre: 3 g per 100 g
Portion: 150 g boiled
Key nutrients: Beta-carotene, potassium, vitamin C, fibre
Why it helps: A better staple than white potato when boiled, with a substantial carotenoid contribution.
Evidence: Strong. The cooking-method difference is well documented and often overlooked in dietary advice.
Caution: Roasted or baked sweet potato behaves more like white potato. It is not a free food.
Preparation: Boil and cool, then reheat gently, to keep the glycaemic response down.

Food

92New potatoes, cooked and cooled

Starchy vegetables

Cooling turns part of the starch into resistant starch.

Waxy new potatoes have a lower glycaemic index than floury varieties, and cooling lowers it further.

Glycaemic index: Medium, approximately 54 when cooled
Glycaemic load: Medium, about 12 per 150 g
Carbohydrate: 17 g per 100 g
Fibre: 1.8 g per 100 g
Portion: 150 g, around 4 small potatoes
Key nutrients: Potassium, vitamin C, resistant starch when cooled
Why it helps: Makes potato workable within a glycaemic-aware diet, provided the variety and preparation are right.
Evidence: Strong for the retrogradation effect and the variety difference; both are consistently measured.
Caution: Mashed, baked and chipped potatoes have a much higher glycaemic response. Keep the skin on for fibre.
Preparation: Boil, cool fully, then use in salads or reheat gently.

Food

93Carrots

Starchy vegetables

Long unfairly avoided; the load per portion is small.

Carrots have a moderate glycaemic index but so little carbohydrate per portion that the load is negligible.

Glycaemic index: Medium, approximately 39 raw, higher when boiled
Glycaemic load: Very low, about 2 per 80 g
Carbohydrate: 9.6 g per 100 g
Fibre: 2.8 g per 100 g
Portion: 80 g, around one large carrot
Key nutrients: Beta-carotene, fibre, potassium, vitamin K
Why it helps: Illustrates why glycaemic load matters more than glycaemic index alone.
Evidence: Strong. This is a standard worked example in glycaemic load teaching.
Caution: Carrot juice concentrates the sugar and removes the fibre.
Preparation: Eat raw as batons, or roast whole with olive oil and cumin.

Food

94Butternut squash

Starchy vegetables

A moderate starch with a large carotenoid return.

Squash sits between non-starchy vegetables and true starches in its glycaemic contribution.

Glycaemic index: Medium, approximately 51
Glycaemic load: Low, about 5 per 150 g
Carbohydrate: 12 g per 100 g
Fibre: 2 g per 100 g
Portion: 150 g
Key nutrients: Beta-carotene, vitamin C, potassium, fibre
Why it helps: A lower-carbohydrate substitute for potato in stews and roasts.
Evidence: Strong for glycaemic values; the substitution benefit is arithmetic.
Caution: Roasting caramelises the sugars and raises the response somewhat.
Preparation: Roast in chunks with olive oil and sage; use to bulk out a smaller portion of grain.

Food

95Beetroot

Starchy vegetables

Nitrate content with vascular relevance, moderate load.

Dietary nitrate converts to nitric oxide, which relaxes blood vessels and modestly lowers blood pressure.

Glycaemic index: Medium, approximately 64, though the portion is small
Glycaemic load: Low, about 5 per 80 g
Carbohydrate: 10 g per 100 g
Fibre: 2.8 g per 100 g
Portion: 80 g cooked
Key nutrients: Nitrates, betalains, folate, potassium
Why it helps: Modest blood pressure reduction, relevant since hypertension drives much of the complication risk in diabetes.
Evidence: Moderate to strong for the blood pressure effect of dietary nitrate, from repeated small randomised trials.
Caution: Beetroot juice concentrates both nitrate and sugar; the whole vegetable is the more balanced choice. Harmless red discolouration of urine is common.
Preparation: Roast whole, or grate raw into salads with lemon.

Food

96Green peas

Starchy vegetables

Protein and fibre alongside the starch.

Peas carry more protein than most vegetables, which moderates their glycaemic effect.

Glycaemic index: Low, approximately 51
Glycaemic load: Low, about 4 per 80 g
Carbohydrate: 9 g per 100 g
Fibre: 5 g per 100 g
Portion: 80 g
Key nutrients: Plant protein, fibre, vitamin K, thiamin
Why it helps: Adds protein and fibre to a plate with a modest glycaemic cost.
Evidence: Strong for composition and glycaemic values.
Caution: Mushy peas and pea-based snacks differ substantially from whole peas.
Preparation: Frozen peas are as good nutritionally as fresh and far more practical.

Food

97Sweetcorn

Starchy vegetables

A true starch, not a free vegetable.

Sweetcorn is commonly mistaken for a non-starchy vegetable, but it contributes meaningful carbohydrate.

Glycaemic index: Medium, approximately 52
Glycaemic load: Medium, about 9 per 80 g
Carbohydrate: 19 g per 100 g
Fibre: 2.4 g per 100 g
Portion: 80 g kernels, or half a corn cob
Key nutrients: Fibre, lutein, zeaxanthin, thiamin
Why it helps: Acceptable in a measured portion, with useful carotenoids, provided it is counted as a starch.
Evidence: Strong for the glycaemic values. This entry is included chiefly to correct a common misclassification.
Caution: Count it as part of the starch portion, not as an extra vegetable. Sweetcorn in syrup or creamed corn is higher again.
Preparation: Boil or griddle on the cob; keep to a defined portion.

Food

98Plantain, green and boiled

Starchy vegetables

Ripeness governs the glycaemic response entirely.

Green plantain is high in resistant starch, while ripe plantain has converted much of it to sugar.

Glycaemic index: Green boiled approximately 40, ripe fried much higher
Glycaemic load: Medium when green and boiled, about 12 per 150 g
Carbohydrate: 32 g per 100 g
Fibre: 2.3 g per 100 g
Portion: 150 g boiled green
Key nutrients: Resistant starch, potassium, vitamin C, vitamin B6
Why it helps: Green boiled plantain is a reasonable staple; the resistant starch also feeds beneficial gut bacteria.
Evidence: Strong for the ripeness and cooking effect, which is large and well documented.
Caution: Fried ripe plantain has a high glycaemic response and substantial added fat. The distinction matters greatly.
Preparation: Boil or steam while green and firm; avoid frying ripe plantain as a staple.

Food

99Cassava, boiled

Starchy vegetables

A staple that requires careful portioning and preparation.

Cassava is a high-carbohydrate staple with a moderate to high glycaemic response depending on preparation.

Glycaemic index: Medium to high, approximately 46 to 70 depending on form
Glycaemic load: High, around 20 per 150 g
Carbohydrate: 38 g per 100 g boiled
Fibre: 1.8 g per 100 g
Portion: 100 g boiled, a smaller portion than is customary
Key nutrients: Carbohydrate, vitamin C, potassium, resistant starch when cooled
Why it helps: Included for practical realism: it can remain in the diet if portioned smaller and paired with pulses, vegetables and protein.
Evidence: Strong for glycaemic values. The pairing strategy rests on well-established evidence that protein, fat and fibre slow gastric emptying.
Caution: Must be properly processed and cooked, as raw cassava contains cyanogenic compounds. Halve the customary portion and fill the space with vegetables and pulses.
Preparation: Boil thoroughly, cool where possible, and serve with a substantial pulse or vegetable dish.

Food

100Konjac noodles

Starchy vegetables

Glucomannan fibre with virtually no digestible carbohydrate.

Konjac is almost entirely glucomannan, a viscous fibre that passes through largely undigested.

Glycaemic index: None, effectively zero
Glycaemic load: Zero
Carbohydrate: Under 1 g per 100 g
Fibre: 3 g per 100 g
Portion: 200 g, one pack
Key nutrients: Glucomannan fibre
Why it helps: Substitutes for a pasta or noodle portion at almost no glycaemic cost; glucomannan has trial evidence for LDL reduction.
Evidence: Moderate to strong. Glucomannan's effects on LDL cholesterol and satiety are supported by meta-analyses of randomised trials.
Caution: Take with plenty of fluid. Glucomannan tablets have caused oesophageal obstruction; the noodle form eaten normally is safe.
Preparation: Rinse well and dry-fry briefly to improve texture before saucing.

Food

101Basmati rice, cooked and cooled

Whole grains

The lowest glycaemic of the common rices, lower still when cooled.

Basmati's amylose content gives it a flatter response than short-grain or jasmine rice.

Glycaemic index: Medium, approximately 50 to 58, lower when cooled
Glycaemic load: Medium, about 16 per 150 g
Carbohydrate: 28 g per 100 g cooked
Fibre: 0.8 g per 100 g
Portion: 150 g cooked, around 5 heaped tablespoons
Key nutrients: Carbohydrate, small amounts of B vitamins, resistant starch when cooled
Why it helps: Where rice is a cultural staple, basmati is the better choice; brown basmati better still.
Evidence: Strong. The differences between rice varieties are large and repeatedly measured; jasmine rice sits far higher.
Caution: White jasmine and short-grain rice have a high glycaemic index. Portion governs the load more than variety.
Preparation: Cook, cool fully, then reheat. Serve with dal or vegetables to lower the meal's overall response.

Food

102Brown basmati rice

Whole grains

Retains the bran, lowering the response further.

The intact bran layer slows water penetration and starch gelatinisation during cooking.

Glycaemic index: Low to medium, approximately 45 to 50
Glycaemic load: Medium, about 14 per 150 g
Carbohydrate: 25 g per 100 g cooked
Fibre: 1.8 g per 100 g
Portion: 150 g cooked
Key nutrients: Fibre, magnesium, manganese, B vitamins
Why it helps: Substituting brown for white rice is associated with lower incident type 2 diabetes in large cohorts.
Evidence: Moderate to strong. The substitution association is consistent, and trials show improved glycaemic measures.
Caution: Brown rice accumulates more arsenic; rinse well and cook in plenty of water that is then drained.
Preparation: Rinse thoroughly, cook in excess water, drain, then steam briefly.

Food

103Sourdough wholemeal bread

Whole grains

Fermentation acids lower the glycaemic response of the same flour.

Lactic and acetic acids produced during long fermentation slow starch digestion and gastric emptying.

Glycaemic index: Low to medium, approximately 54
Glycaemic load: Medium, about 13 per 60 g slice
Carbohydrate: 43 g per 100 g
Fibre: 6 g per 100 g
Portion: 60 g, one slice
Key nutrients: Fibre, B vitamins, manganese, organic acids
Why it helps: A genuine reduction in post-meal glucose compared with the same flour baked with commercial yeast.
Evidence: Strong. The sourdough effect on post-prandial glucose is consistently reproduced.
Caution: Many supermarket sourdoughs are yeast-raised with added flavouring. Look for a long fermentation and a short ingredient list.
Preparation: Toast and top with eggs, avocado or oily fish rather than jam.

Food

104Wholegrain crispbread

Whole grains

A better vehicle than crackers or crisps, in a defined portion.

Rye crispbreads deliver fibre in a countable unit, which helps with portion discipline.

Glycaemic index: Low to medium, approximately 55
Glycaemic load: Low, about 5 per two crispbreads
Carbohydrate: 65 g per 100 g
Fibre: 16 g per 100 g
Portion: Two crispbreads, around 20 g
Key nutrients: Fibre, manganese, magnesium, B vitamins
Why it helps: Replaces crackers and crisps with a high-fibre, portion-countable alternative.
Evidence: Moderate. The benefit is chiefly displacement and fibre content rather than a distinct metabolic effect.
Caution: Contains gluten. Check for added sugar and palm oil in flavoured varieties.
Preparation: Top with cottage cheese, tomato and pepper.

Food

105Kimchi

Fermented foods

Fermented vegetables with early trial evidence in prediabetes.

Fermentation produces lactic acid bacteria and organic acids, both proposed as mechanisms.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 2.4 g per 100 g
Fibre: 1.6 g per 100 g
Portion: 50 g, around 3 tablespoons
Key nutrients: Lactic acid bacteria, vitamin K, vitamin C, capsaicin
Why it helps: Small trials in prediabetes have reported improved insulin sensitivity with regular fermented kimchi.
Evidence: Weak to moderate. Trials are small and mostly from single research groups; treat as promising rather than established.
Caution: High sodium, which matters with hypertension or kidney disease. Fresh unfermented kimchi lacks the cultures.
Preparation: Use as a condiment rather than a large portion, given the salt.

Food

106Sauerkraut

Fermented foods

Live cultures at negligible carbohydrate cost.

Unpasteurised sauerkraut retains live bacteria; the shelf-stable jars generally do not.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 4 g per 100 g
Fibre: 2.9 g per 100 g
Portion: 50 g
Key nutrients: Lactic acid bacteria, vitamin C, vitamin K, fibre
Why it helps: Contributes fermented food to the diet, associated in cohort data with modest metabolic benefit.
Evidence: Weak to moderate. Fermented food evidence is developing; specific claims should be treated cautiously.
Caution: High sodium. Choose refrigerated, unpasteurised versions for live cultures.
Preparation: Serve cold as a condiment; heating kills the cultures.

Food

107Miso

Fermented foods

Fermented soya paste that flavours without much salt per serving.

Miso is salty but used in small quantities, and carries fermentation-derived compounds.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 25 g per 100 g, but portions are small
Fibre: 5 g per 100 g
Portion: 15 g, around one tablespoon
Key nutrients: Fermented soya isoflavones, vitamin K, manganese
Why it helps: Provides savoury depth that reduces the need for other flavourings; fermented soya intake shows favourable cohort associations.
Evidence: Weak to moderate. Cohort data from Japan are supportive, but confounding by overall diet pattern is substantial.
Caution: High sodium per gram. Not suitable in unrestricted amounts with hypertension.
Preparation: Stir into warm, not boiling, liquid to preserve the cultures.

Food

108Tempeh

Fermented foods

Fermented whole soya beans; high protein, low carbohydrate.

Unlike tofu, tempeh uses the whole bean, so it retains the fibre.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 9 g per 100 g
Fibre: 6 g per 100 g
Portion: 100 g
Key nutrients: Complete plant protein, fibre, manganese, isoflavones
Why it helps: A high-protein meat substitute with minimal glycaemic effect and useful fibre.
Evidence: Moderate. Soya protein substitution shows modest lipid benefits in meta-analyses.
Caution: Separate from levothyroxine doses by several hours.
Preparation: Steam briefly, then marinate and griddle.

Food

109Tofu, firm

Fermented foods

Neutral, high-protein base for vegetable dishes.

Firm tofu is concentrated soya protein with very little carbohydrate.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 2 g per 100 g
Fibre: 0.9 g per 100 g
Portion: 120 g
Key nutrients: Plant protein, calcium if set with calcium salts, isoflavones, iron
Why it helps: Raises the protein share of a meal, lowering its glycaemic load, at low cost.
Evidence: Moderate to strong for protein substitution effects; soya-specific benefits are modest.
Caution: Separate from levothyroxine. Silken tofu has a different texture and lower protein density.
Preparation: Press to remove water, then marinate and roast or griddle until firm.

Food

110Live natural yoghurt, unsweetened

Fermented foods

The everyday base for a lower-sugar breakfast.

Plain yoghurt with fruit added at home replaces the 15 to 20 g of added sugar in a typical flavoured pot.

Glycaemic index: Low, approximately 14
Glycaemic load: Very low
Carbohydrate: 5 g per 100 g
Fibre: 0 g
Portion: 150 g
Key nutrients: Protein, calcium, live cultures, iodine
Why it helps: A direct substitution that removes a large source of added sugar from a daily habit.
Evidence: Strong for the substitution arithmetic; the yoghurt cohort association adds further support.
Caution: Low-fat flavoured yoghurts often contain more sugar than full-fat plain. Read the label rather than the front of the pot.
Preparation: Add berries, cinnamon and a few nuts.

Food

111Wholegrain mustard

Practical swaps

Flavour and texture without sugar.

Mustard delivers a great deal of flavour for almost no carbohydrate, unlike most condiments.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 5 g per 100 g
Fibre: 4 g per 100 g
Portion: 10 g, around two teaspoons
Key nutrients: Selenium, glucosinolates, small amounts of omega-3
Why it helps: Replaces ketchup, sweet chilli and barbecue sauces, which carry substantial added sugar.
Evidence: Strong as a substitution; ketchup contains roughly a quarter of its weight as sugar.
Caution: Some mustards contain added sugar or honey; check.
Preparation: Whisk with olive oil and vinegar for a dressing.

Food

112Plain Greek yoghurt in place of mayonnaise

Practical swaps

A swap that cuts calories without adding sugar.

Yoghurt provides the creaminess of mayonnaise at a fraction of the energy density, with protein added.

Glycaemic index: Low
Glycaemic load: Very low
Carbohydrate: 4 g per 100 g
Fibre: 0 g
Portion: 30 g in place of the same weight of mayonnaise
Key nutrients: Protein, calcium, live cultures
Why it helps: Reduces the energy density of a familiar dish, supporting the weight reduction that drives glycaemic improvement.
Evidence: Strong. This is a straightforward energy substitution, and weight reduction has robust trial evidence in type 2 diabetes.
Caution: Not suitable in dairy allergy; those with lactose intolerance often tolerate strained yoghurt.
Preparation: Mix with mustard, lemon and herbs for a dressing that holds up in salads.

Food

113Cauliflower rice in place of rice

Practical swaps

The single largest carbohydrate reduction available at dinner.

A standard rice portion carries around 30 g of carbohydrate; the cauliflower equivalent carries under 4 g.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 5 g per 100 g
Fibre: 2 g per 100 g
Portion: 150 g in place of 150 g cooked rice
Key nutrients: Vitamin C, folate, choline, fibre
Why it helps: Removes roughly 25 to 30 g of available carbohydrate from a single meal.
Evidence: Strong. The effect is arithmetic rather than inferential.
Caution: Anyone on insulin or a sulfonylurea must adjust the dose for the reduced carbohydrate, or risk hypoglycaemia. Discuss with your clinician first.
Preparation: Blitz and dry-fry with spices; mix half and half with real rice if the change is too abrupt.

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114Courgette ribbons in place of pasta

Practical swaps

Halving pasta and replacing the volume works better than removing it.

A half-and-half approach keeps the dish satisfying while cutting the glycaemic load substantially.

Glycaemic index: Very low for the courgette portion
Glycaemic load: Halved relative to a full pasta portion
Carbohydrate: 3 g per 100 g courgette
Fibre: 1 g per 100 g
Portion: 75 g pasta plus 100 g courgette in place of 150 g pasta
Key nutrients: Vitamin C, potassium, fibre
Why it helps: Reduces the meal's carbohydrate by around half without the sense of deprivation that drives lapses.
Evidence: Strong as arithmetic; the adherence advantage of partial substitution is supported by behavioural trial evidence.
Caution: Adjust insulin doses accordingly.
Preparation: Griddle the ribbons separately and fold through at the end so they do not water down the sauce.

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115Lettuce or cabbage wraps in place of bread

Practical swaps

Removes the carbohydrate from a sandwich entirely.

Large leaves hold fillings well enough to replace bread for lunch.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 2 to 6 g per 100 g
Fibre: 1 to 2.5 g per 100 g
Portion: Two to three large leaves
Key nutrients: Folate, vitamin K, vitamin C, water
Why it helps: Removes 30 to 40 g of carbohydrate from a typical sandwich lunch.
Evidence: Strong as arithmetic.
Caution: Less satisfying for some; pair with a substantial protein and fat filling or it will not sustain.
Preparation: Blanch cabbage leaves briefly to make them pliable; use crisp lettuce raw.

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116Sparkling water with lemon in place of soft drinks

Practical swaps

The highest-value single change for most people.

A single 330 ml can of a sugary drink carries around 35 g of rapidly absorbed sugar.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: Replace each sugary drink
Key nutrients: None
Why it helps: Removes the most rapidly absorbed carbohydrate source in most diets, with strong evidence linking these drinks to diabetes risk.
Evidence: Strong. The association between sugar-sweetened beverages and type 2 diabetes is among the most consistent in the field.
Caution: Diet drinks are a reasonable transitional step, though water is the better destination.
Preparation: Add lemon, lime, mint or cucumber for interest.

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117Dark chocolate, 85 per cent or higher

Practical swaps

A workable treat with a modest sugar load.

At 85 per cent cocoa solids, sugar falls to a small fraction of the bar's weight.

Glycaemic index: Low, approximately 23
Glycaemic load: Low, about 2 per 20 g
Carbohydrate: 22 g per 100 g at 85 per cent
Fibre: 11 g per 100 g
Portion: 20 g, around two squares
Key nutrients: Flavanols, magnesium, iron, copper
Why it helps: Satisfies a chocolate habit at a fraction of the sugar; cocoa flavanols have modest blood pressure evidence.
Evidence: Moderate. Cocoa flavanol trials show small blood pressure and endothelial improvements; the sugar reduction is the more certain benefit.
Caution: Milk chocolate at 30 per cent cocoa carries around 50 g sugar per 100 g. The distinction is the whole point.
Preparation: Eat slowly with coffee; keep the portion visible rather than eating from the bar.

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118Cinnamon and vanilla in place of sugar

Practical swaps

Perceived sweetness without carbohydrate.

Both provide aromatic sweetness that partly substitutes for the sensation of sugar.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: Negligible in the amounts used
Fibre: Negligible
Portion: To taste
Key nutrients: Polyphenols, aromatic compounds
Why it helps: Allows gradual reduction of added sugar in porridge, yoghurt and coffee without an abrupt loss of palatability.
Evidence: Moderate. Sweetness perception adapts over weeks, which is well documented; the aromatic substitution is a practical aid.
Caution: Use Ceylon cinnamon for daily amounts. Vanilla essence often contains sugar; use extract or pods.
Preparation: Reduce added sugar by a quarter at a time rather than all at once.

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119Nuts in place of biscuits at elevenses

Practical swaps

Changes the shape of the mid-morning glucose curve.

Two digestive biscuits carry around 20 g of rapidly absorbed carbohydrate; a handful of nuts carries almost none.

Glycaemic index: Very low for nuts
Glycaemic load: Negligible per 30 g
Carbohydrate: Varies by nut, largely unabsorbed
Fibre: 6 to 12 g per 100 g
Portion: 30 g
Key nutrients: Unsaturated fat, magnesium, vitamin E, plant protein
Why it helps: Removes a mid-morning glucose spike and improves satiety until lunch.
Evidence: Strong. The substitution is arithmetic, and nut cohort evidence for diabetes incidence is supportive.
Caution: Portion by weight, not by handful, if weight loss is the aim.
Preparation: Decant 30 g portions into small containers at the start of the week.

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120Eating vegetables and protein before carbohydrate

Meal strategies

Food order alone lowers the post-meal glucose peak.

Consuming vegetables and protein first, then the starch, changes the glucose curve of an identical meal.

Glycaemic index: Not applicable
Glycaemic load: Meal load unchanged, peak reduced
Carbohydrate: Unchanged
Fibre: Unchanged
Portion: Applies to any mixed meal
Key nutrients: Not applicable
Why it helps: Reduces the post-prandial glucose peak of the same meal, without changing what is eaten.
Evidence: Moderate to strong. Several randomised crossover trials in type 2 diabetes show meaningful reductions in post-prandial glucose from food order alone.
Caution: Does not reduce total carbohydrate; insulin dosing still reflects the full meal.
Preparation: Serve salad first, then the protein and vegetables, then the starch.

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121A ten-minute walk after eating

Meal strategies

Muscle contraction clears glucose independently of insulin.

Contracting muscle takes up glucose through a pathway that does not require insulin, which is why post-meal walking works.

Glycaemic index: Not applicable
Glycaemic load: Not applicable
Carbohydrate: Not applicable
Fibre: Not applicable
Portion: 10 to 15 minutes, within 30 minutes of the meal
Key nutrients: Not applicable
Why it helps: Reduces the post-meal glucose peak, with the largest effect after the evening meal.
Evidence: Strong. Randomised crossover trials consistently show reduced post-prandial glucose from short post-meal walks.
Caution: Those on insulin or a sulfonylurea should be alert to delayed hypoglycaemia and may need to review doses.
Preparation: Build it into the routine, such as walking to clear up or to post a letter after dinner.

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122Vinegar dressing with a starchy meal

Meal strategies

Acid slows gastric emptying enough to matter.

A vinegar-based dressing eaten with a starch meal reduces the glucose peak modestly but reliably.

Glycaemic index: Not applicable
Glycaemic load: Meal peak reduced
Carbohydrate: Negligible
Fibre: Negligible
Portion: One to two tablespoons of vinegar in a dressing
Key nutrients: Acetic acid
Why it helps: A small, cost-free reduction in post-meal glucose, additive with other strategies.
Evidence: Moderate. Consistent direction of effect across small crossover trials.
Caution: Dilute and take with food to protect teeth and oesophagus. Caution in gastroparesis.
Preparation: Make a standing jar of olive oil, vinegar, mustard and lemon.

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123Protein at breakfast

Meal strategies

The meal where refined carbohydrate does most damage.

Insulin sensitivity is generally lowest in the morning, so a refined-carbohydrate breakfast produces the largest glucose excursion of the day.

Glycaemic index: Not applicable
Glycaemic load: Substantially reduced against a cereal breakfast
Carbohydrate: Reduced by 20 to 40 g typically
Fibre: Maintain with vegetables or berries
Portion: 20 to 30 g protein at breakfast
Key nutrients: Protein, and whatever the source provides
Why it helps: Flattens the morning glucose curve and reduces intake later in the day.
Evidence: Strong. The morning insulin resistance pattern and the satiety effect of protein breakfasts are both well documented.
Caution: Adjust insulin doses if changing breakfast composition substantially.
Preparation: Eggs, Greek yoghurt with nuts, or leftover fish and vegetables.

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124Keeping the plate to half non-starchy vegetables

Meal strategies

A visual rule that needs no counting.

Half the plate vegetables, a quarter protein and a quarter starch is the simplest workable structure.

Glycaemic index: Not applicable
Glycaemic load: Typically reduced by a third or more
Carbohydrate: Reduced by portion control of the starch quarter
Fibre: Substantially increased
Portion: Applies to every main meal
Key nutrients: Broad micronutrient coverage from the vegetable half
Why it helps: Reduces glycaemic load reliably without requiring anyone to weigh food or memorise values.
Evidence: Strong. Plate-based methods are endorsed by major diabetes bodies and perform well in practice because they are sustainable.
Caution: Does not by itself account for insulin dosing, which still requires carbohydrate estimation.
Preparation: Use a smaller plate, and fill the vegetable half first.

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125Cooking from raw rather than using ready meals

Meal strategies

Control over salt, sugar and portion in a single decision.

Ultra-processed food intake is associated with higher incident type 2 diabetes across large cohorts.

Glycaemic index: Not applicable
Glycaemic load: Typically reduced
Carbohydrate: Typically reduced, particularly hidden sugars
Fibre: Typically increased
Portion: Applies broadly
Key nutrients: Improved across the board
Why it helps: Reduces hidden sugar, salt and refined starch, and restores control over portion.
Evidence: Moderate to strong. The cohort association between ultra-processed food and type 2 diabetes is consistent, and a controlled trial has shown higher intake and weight gain on an ultra-processed diet.
Caution: Time pressure is the real obstacle; batch cooking is the practical answer rather than exhortation.
Preparation: Cook a pot of pulses and a tray of roast vegetables at the weekend for use across the week.

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126Bitter gourd

Herbs, spices and flavourings

Traditional remedy with genuine but limited evidence.

Bitter gourd contains compounds with insulin-like activity in laboratory work.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 3.7 g per 100 g
Fibre: 2.8 g per 100 g
Portion: 80 g as a vegetable
Key nutrients: Charantin, vicine, vitamin C, folate
Why it helps: Some trials report modest fasting glucose reductions; as a vegetable it is glycaemically inert and nutrient dense.
Evidence: Weak to moderate. Reviews find trials small and of variable quality, with effects smaller than standard medication. It is not a substitute for treatment.
Caution: May lower glucose additively with medication. Avoid in pregnancy. Seeds should not be eaten in quantity.
Preparation: Salt and rinse to reduce bitterness, then stir-fry with onion and egg.

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127Nigella seeds

Herbs, spices and flavourings

Studied for modest glycaemic and lipid effects.

Black seed has been examined in several small trials with generally favourable but imprecise results.

Glycaemic index: None in culinary amounts
Glycaemic load: Negligible
Carbohydrate: Negligible in culinary amounts
Fibre: Negligible in culinary amounts
Portion: 1 to 2 g daily
Key nutrients: Thymoquinone, unsaturated fat, iron
Why it helps: Meta-analyses of small trials suggest modest reductions in fasting glucose and HbA1c.
Evidence: Weak to moderate. Trials are small, short and often at risk of bias. Treat as an adjunct at most.
Caution: May potentiate glucose-lowering medication and affect blood pressure. Discuss before regular use.
Preparation: Toast lightly and scatter over vegetables, breads and yoghurt.

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128Cocoa powder, unsweetened

Herbs, spices and flavourings

Flavanols without the sugar of chocolate.

Unsweetened cocoa carries the flavanols of chocolate with none of the added sugar.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 58 g per 100 g, but portions are small
Fibre: 33 g per 100 g
Portion: 5 g, around one teaspoon
Key nutrients: Flavanols, magnesium, iron, fibre
Why it helps: Provides the flavour of chocolate for yoghurt and porridge without added sugar.
Evidence: Moderate. Cocoa flavanol trials show small improvements in blood pressure and endothelial function.
Caution: Drinking chocolate powders are mostly sugar. Buy plain cocoa.
Preparation: Whisk into hot milk with cinnamon in place of instant hot chocolate.

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129Seaweed

Non-starchy vegetables

Iodine and soluble fibre with negligible carbohydrate.

Seaweeds contain alginates and other viscous fibres studied for their effect on digestion.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: Varies, typically under 10 g per 100 g
Fibre: High, largely soluble
Portion: 5 g dried
Key nutrients: Iodine, alginates, magnesium, vitamin K
Why it helps: Adds savour and soluble fibre; small trials suggest alginates may reduce post-meal glucose.
Evidence: Weak to moderate. Alginate trials are small; the iodine contribution is certain and nutritionally useful.
Caution: Iodine content can be very high, particularly in kelp, and excess iodine disturbs thyroid function. Keep portions small and infrequent if you have thyroid disease.
Preparation: Use nori or wakame in small amounts in soups and salads.

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130Artichoke

Non-starchy vegetables

Inulin-rich with a negligible glycaemic effect.

Jerusalem artichoke in particular is very high in inulin, a fermentable prebiotic fibre.

Glycaemic index: Very low
Glycaemic load: Negligible for globe artichoke
Carbohydrate: 11 g per 100 g globe artichoke
Fibre: 5.4 g per 100 g
Portion: 80 g
Key nutrients: Inulin, folate, vitamin K, magnesium
Why it helps: Prebiotic fibre associated in trials with small improvements in glycaemic measures.
Evidence: Moderate. Inulin supplementation trials show modest effects; food-level evidence is weaker.
Caution: Jerusalem artichoke causes marked flatulence in many people. Introduce in small amounts.
Preparation: Steam globe artichokes and serve with lemon and olive oil.

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131Celeriac

Non-starchy vegetables

A convincing mash in place of potato.

Celeriac carries about a third the carbohydrate of potato and mashes to a similar texture.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 9 g per 100 g
Fibre: 1.8 g per 100 g
Portion: 150 g
Key nutrients: Vitamin K, phosphorus, potassium, fibre
Why it helps: Replacing mashed potato with celeriac removes roughly 20 g of carbohydrate per portion.
Evidence: Strong as arithmetic.
Caution: Adjust insulin for the reduced carbohydrate.
Preparation: Boil and mash with olive oil, mustard and black pepper.

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132Fennel

Non-starchy vegetables

Aniseed sweetness with almost no carbohydrate.

Roasted fennel becomes sweet and soft, a useful counter to a reduced-sugar diet.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 7 g per 100 g
Fibre: 3.1 g per 100 g
Portion: 80 g
Key nutrients: Vitamin C, potassium, fibre, anethole
Why it helps: Provides sweetness and bulk without glycaemic cost.
Evidence: Strong for glycaemic neutrality.
Caution: None of significance in food amounts.
Preparation: Roast in wedges with olive oil until the edges caramelise.

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133Leeks

Non-starchy vegetables

Prebiotic fibre and a sweet base for cooking.

Leeks and onions contain fructans that feed beneficial colonic bacteria.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 14 g per 100 g, portions small
Fibre: 1.8 g per 100 g
Portion: 80 g
Key nutrients: Fructans, vitamin K, manganese, folate
Why it helps: Provides a flavour base that reduces the need for stock cubes and sugar in cooking.
Evidence: Moderate for the prebiotic effect; strong for the culinary displacement of salt and sugar.
Caution: Fructans trigger symptoms in some people with irritable bowel syndrome.
Preparation: Soften slowly in olive oil as the base for soups and stews.

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134Watercress

Non-starchy vegetables

Very high nutrient density for almost no energy.

Watercress ranks among the most nutrient-dense foods per calorie.

Glycaemic index: Very low
Glycaemic load: Negligible
Carbohydrate: 1.3 g per 100 g
Fibre: 0.5 g per 100 g
Portion: 40 g
Key nutrients: Vitamin K, vitamin C, nitrates, glucosinolates
Why it helps: Contributes dietary nitrate, relevant to blood pressure, at negligible glycaemic cost.
Evidence: Moderate for the nitrate and blood pressure pathway; strong for glycaemic neutrality.
Caution: Vitamin K content is relevant on warfarin.
Preparation: Use as a peppery salad base or wilt into soups at the end.

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135Red onion

Non-starchy vegetables

Quercetin-rich, and the base of most savoury cooking.

Onions carry quercetin and fructans, and their sweetness reduces the need for added sugar.

Glycaemic index: Low
Glycaemic load: Negligible in normal portions
Carbohydrate: 9 g per 100 g
Fibre: 1.7 g per 100 g
Portion: 50 g, around half a small onion
Key nutrients: Quercetin, fructans, vitamin C, sulphur compounds
Why it helps: Provides culinary sweetness and depth without sugar; quercetin has modest blood pressure evidence.
Evidence: Moderate. Quercetin trials show small blood pressure effects at doses above typical dietary intake.
Caution: Fructans may trouble those with irritable bowel syndrome.
Preparation: Slow-cook to develop sweetness rather than adding sugar to sauces.

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136Wholegrain wheat berries

Whole grains

The least processed form of wheat.

Whole intact kernels give a much lower glycaemic response than any flour made from the same grain.

Glycaemic index: Low, approximately 41
Glycaemic load: Medium, about 11 per 150 g cooked
Carbohydrate: 25 g per 100 g cooked
Fibre: 5 g per 100 g
Portion: 150 g cooked
Key nutrients: Fibre, magnesium, manganese, B vitamins
Why it helps: Demonstrates the general rule that intact grains beat flour, however wholemeal the flour.
Evidence: Strong. Particle size and grain integrity are among the most reliable determinants of glycaemic response.
Caution: Contains gluten. Long cooking time.
Preparation: Simmer for around an hour; batch cook and refrigerate for salads.

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137Whole rye kernels

Whole grains

Among the lowest glycaemic responses of any grain preparation.

Intact rye kernels resist digestion far more than rye flour products.

Glycaemic index: Low, approximately 34
Glycaemic load: Low, about 9 per 150 g cooked
Carbohydrate: 23 g per 100 g cooked
Fibre: 6 g per 100 g
Portion: 150 g cooked
Key nutrients: Fibre, arabinoxylan, magnesium, manganese
Why it helps: Produces a notably flat glucose curve and a favourable second-meal effect the following morning.
Evidence: Strong. The rye second-meal effect is repeatedly demonstrated in crossover trials.
Caution: Contains gluten.
Preparation: Soak overnight, then simmer; use in salads with roasted vegetables.

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138Oat bran

Whole grains

Concentrated beta-glucan in a small volume.

Oat bran carries the fibre fraction of the oat in concentrated form.

Glycaemic index: Low, approximately 50
Glycaemic load: Low, about 7 per 30 g
Carbohydrate: 66 g per 100 g dry
Fibre: 15 g per 100 g dry
Portion: 30 g dry
Key nutrients: Beta-glucan, magnesium, phosphorus, thiamin
Why it helps: A concentrated dose of the fibre with recognised effects on post-prandial glucose and LDL cholesterol.
Evidence: Strong. Beta-glucan's glycaemic and cholesterol effects are among the best-supported in this album.
Caution: Increase fluid intake alongside. Introduce gradually.
Preparation: Stir a spoonful into porridge, soups or yoghurt to raise fibre without changing the meal.

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139Psyllium husk

Whole grains

The most concentrated practical source of viscous fibre.

Psyllium forms a highly viscous gel, slowing carbohydrate absorption more than most fibres.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: Almost entirely fibre
Fibre: Around 80 g per 100 g
Portion: 5 to 10 g with a large glass of water
Key nutrients: Soluble fibre
Why it helps: Meta-analyses show reductions in fasting glucose, HbA1c and LDL cholesterol with regular use.
Evidence: Strong. Psyllium has among the best trial evidence of any fibre supplement for glycaemic and lipid outcomes.
Caution: Must be taken with ample fluid. Separate from medicines by two hours, as it can slow their absorption. Introduce gradually.
Preparation: Stir into water and drink immediately, or mix into porridge.

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140Barley flakes

Whole grains

A lower glycaemic alternative to rolled oats.

Barley flakes carry beta-glucan like oats but with a slightly lower glycaemic response.

Glycaemic index: Low, approximately 44
Glycaemic load: Medium, about 10 per 40 g dry
Carbohydrate: 70 g per 100 g dry
Fibre: 15 g per 100 g dry
Portion: 40 g dry
Key nutrients: Beta-glucan, selenium, manganese, fibre
Why it helps: A direct swap for oats with a slightly better glycaemic profile and similar cost.
Evidence: Strong for beta-glucan; the barley versus oat difference is modest but consistent.
Caution: Contains gluten.
Preparation: Cook as porridge; combine with oats if the texture is unfamiliar.

Food

141Rooibos tea

Drinks

Caffeine free, no glycaemic load, useful in the evening.

Rooibos provides a warm drink without caffeine, supporting the sleep that matters for glucose control.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 0 g
Fibre: 0 g
Portion: 2 to 3 cups
Key nutrients: Aspalathin, polyphenols
Why it helps: Replaces sweetened evening drinks; sleep quality itself affects insulin sensitivity.
Evidence: Weak for rooibos-specific metabolic effects. Strong for the link between short or poor sleep and impaired glucose tolerance.
Caution: None of significance.
Preparation: Drink unsweetened; it is naturally low in tannins so does not turn bitter.

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142Tomato juice, unsalted

Drinks

The one common juice with a low glycaemic load.

Unlike fruit juices, tomato juice carries little sugar, which makes it the exception among juices.

Glycaemic index: Low, approximately 38
Glycaemic load: Low, about 4 per 200 ml
Carbohydrate: 3.5 g per 100 ml
Fibre: 0.4 g per 100 ml
Portion: 200 ml
Key nutrients: Lycopene, potassium, vitamin C
Why it helps: Provides a savoury drink option with lycopene and minimal sugar.
Evidence: Strong for the glycaemic values, which are unusual among juices.
Caution: Standard tomato juice is high in added salt; choose unsalted versions.
Preparation: Serve chilled with lemon, black pepper and celery.

Food

143Milk, semi-skimmed

Dairy

Lactose has a lower glycaemic index than expected.

Milk's protein and fat moderate the response to its lactose content.

Glycaemic index: Low, approximately 31
Glycaemic load: Low, about 4 per 200 ml
Carbohydrate: 4.8 g per 100 ml
Fibre: 0 g
Portion: 200 ml
Key nutrients: Calcium, protein, iodine, vitamin B12, riboflavin
Why it helps: A low-glycaemic source of protein and calcium; the protein flattens the response of cereals it accompanies.
Evidence: Strong for the glycaemic values. Cohort evidence on milk and diabetes is broadly neutral.
Caution: The carbohydrate still counts, particularly in large quantities such as milky coffees through the day.
Preparation: Use in porridge and coffee; avoid flavoured milk drinks, which carry substantial added sugar.

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144Skyr

Dairy

The highest protein per calorie of the common dairy products.

Strained further than Greek yoghurt, skyr concentrates protein and reduces lactose.

Glycaemic index: Low
Glycaemic load: Very low
Carbohydrate: 4 g per 100 g
Fibre: 0 g
Portion: 150 g
Key nutrients: Protein, calcium, live cultures, vitamin B12
Why it helps: Very high satiety per calorie, supporting weight reduction with minimal glycaemic effect.
Evidence: Strong for the protein and satiety effect.
Caution: Flavoured skyr often carries added sugar despite the healthy positioning.
Preparation: Eat plain with berries; use as a thick base for savoury dips.

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145Paneer

Dairy

High-protein cheese that holds its shape in cooking.

Paneer adds substantial protein to vegetable dishes without carbohydrate.

Glycaemic index: None
Glycaemic load: Zero
Carbohydrate: 1.2 g per 100 g
Fibre: 0 g
Portion: 80 g
Key nutrients: Protein, calcium, phosphorus, vitamin B12
Why it helps: Raises the protein share of vegetable curries, reducing the proportion of the meal that is rice or bread.
Evidence: Strong for the protein substitution effect.
Caution: Energy dense and high in saturated fat. Portion accordingly; grill rather than deep fry.
Preparation: Griddle cubes and add at the end, rather than frying in ghee.

Food

146Sardine and bean salad

Composed meals

A complete low-glycaemic meal in five minutes.

Tinned sardines with white beans, red onion, parsley, lemon and olive oil combines protein, omega-3, fibre and unsaturated fat.

Glycaemic index: Low overall
Glycaemic load: Low, around 8 for the whole plate
Carbohydrate: Around 25 g for the plate
Fibre: Around 9 g
Portion: One tin of sardines with 150 g beans and salad
Key nutrients: Omega-3, plant protein, calcium, fibre, monounsaturated fat
Why it helps: Combines four separately evidenced elements into one practical meal that needs no cooking.
Evidence: Strong. Each component carries good evidence; the combination follows the Mediterranean pattern tested in large randomised trials.
Caution: Watch the salt in tinned fish and beans; rinse the beans.
Preparation: Assemble in one bowl; dress heavily with lemon and olive oil.

Food

147Lentil and vegetable soup

Composed meals

Batch-cooked, freezable, and consistently low glycaemic.

Lentils, onion, carrot, celery, tomato and stock make a meal with a large fibre load and a flat glucose curve.

Glycaemic index: Low overall
Glycaemic load: Low, around 9 per bowl
Carbohydrate: Around 30 g per generous bowl
Fibre: Around 12 g
Portion: 400 ml bowl
Key nutrients: Plant protein, fibre, folate, potassium, iron
Why it helps: Provides a high-fibre, low-load meal that keeps for a week and freezes well, which is what makes it sustainable.
Evidence: Strong. Legume and vegetable evidence is robust; the practical advantage is adherence.
Caution: Shop-bought soups often carry high salt and added sugar. Make it at home.
Preparation: Cook a large pot weekly; finish each bowl with lemon and olive oil.

Food

148Greek yoghurt with berries, nuts and cinnamon

Composed meals

A breakfast that replaces cereal without loss of convenience.

Protein, fat, fibre and polyphenols in a bowl that takes two minutes to assemble.

Glycaemic index: Low overall
Glycaemic load: Low, around 6 for the bowl
Carbohydrate: Around 20 g
Fibre: Around 6 g
Portion: 150 g yoghurt, 80 g berries, 20 g nuts
Key nutrients: Protein, calcium, anthocyanins, unsaturated fat, live cultures
Why it helps: Replaces a breakfast cereal that would typically carry 40 g or more of rapidly absorbed carbohydrate.
Evidence: Strong. The substitution arithmetic is clear and the protein breakfast evidence is solid.
Caution: Use plain yoghurt and unsweetened frozen berries; granola toppings undo the benefit.
Preparation: Assemble the night before if mornings are rushed.

Food

149Chickpea and vegetable traybake

Composed meals

One tray, minimal effort, a week of lunches.

Chickpeas roasted with peppers, courgette, red onion and olive oil, finished with lemon and herbs.

Glycaemic index: Low overall
Glycaemic load: Low, around 9 per portion
Carbohydrate: Around 30 g per portion
Fibre: Around 10 g
Portion: One quarter of a large tray
Key nutrients: Plant protein, fibre, monounsaturated fat, vitamin C, folate
Why it helps: Delivers the legume and vegetable evidence in a form that survives a working week.
Evidence: Strong for the components. Batch preparation addresses adherence, which is the usual point of failure.
Caution: Keep an eye on total oil if weight loss is the aim; measure rather than pour.
Preparation: Roast at high heat until the edges catch; dress with lemon after cooking, not before.

Food

150Grilled oily fish with green vegetables and a small grain portion

Composed meals

The template dinner for this whole album.

A palm-sized piece of oily fish, half a plate of green vegetables, and a measured portion of barley or brown basmati.

Glycaemic index: Low overall
Glycaemic load: Low to medium, around 12 for the plate
Carbohydrate: Around 30 g, from the grain portion
Fibre: Around 8 g
Portion: 140 g fish, 200 g vegetables, 100 g cooked grain
Key nutrients: Omega-3, complete protein, fibre, magnesium, folate
Why it helps: Assembles the strongest elements of the evidence into one repeatable evening meal.
Evidence: Strong. Each element is separately supported, and the resulting pattern resembles the Mediterranean diets tested with cardiovascular endpoints in large randomised trials.
Caution: The grain portion is the variable to adjust for individual glucose response. Measure it once so the eye learns it.
Preparation: Grill the fish, steam the greens, dress both with olive oil and lemon.

Food

1Walking at a comfortable pace

Everyday movement

The foundation of every activity recommendation in diabetes.

Walking requires no equipment, carries the lowest injury risk of any activity here, and is the most sustained over years.

Intensity: Light to moderate
Suggested dose: 30 minutes most days, or three 10-minute blocks
Effect on glucose: Lowers glucose during and for several hours after; effect is modest but reliable
Hypoglycaemia risk: Low risk on metformin alone. On insulin or a sulfonylurea, check before and after until the pattern is known.
Suits: Almost everyone, including those with obesity, arthritis and cardiovascular disease
Take advice first: Active foot ulceration, where weight-bearing must be reduced until healed
Progression: Add five minutes a week, then increase pace before increasing duration
Evidence: Strong. Meta-analyses show walking programmes reduce HbA1c by a clinically meaningful margin, and walking is the activity with the best long-term adherence.
What you need: Well-fitted shoes with a wide toe box; check feet daily

Activity

2Brisk walking

Everyday movement

The step up that produces most of the measurable benefit.

A pace at which you can talk but not sing sits in the moderate-intensity zone that guidelines target.

Intensity: Moderate
Suggested dose: 150 minutes a week, spread over at least three days
Effect on glucose: Reduces post-meal glucose and improves insulin sensitivity for 24 to 48 hours
Hypoglycaemia risk: Moderate risk on insulin or sulfonylureas, particularly if walking before a meal.
Suits: Most people once comfortable walking is established
Take advice first: Unstable angina, uncontrolled hypertension or active foot ulceration until reviewed
Progression: Increase pace on alternate blocks, or add gentle hills
Evidence: Strong. The 150 minutes of moderate activity target is common to all major diabetes guidelines and rests on extensive trial and cohort evidence.
What you need: Supportive footwear; consider a watch or phone to track pace

Activity

3A ten-minute walk after each main meal

Everyday movement

The most efficient timing of walking for glucose control.

Splitting the same total walking into three post-meal blocks lowers glucose more than one continuous walk.

Intensity: Light to moderate
Suggested dose: 10 minutes within 30 minutes of each main meal
Effect on glucose: Substantially reduces post-meal peaks, most markedly after the evening meal
Hypoglycaemia risk: Low, though those on insulin should watch for delayed drops.
Suits: Everyone, including those with limited time
Take advice first: Nothing specific beyond general walking cautions
Progression: Extend to 15 minutes, then add gentle pace
Evidence: Strong. Randomised crossover trials found post-meal walking superior to the same volume of walking taken at one time.
What you need: None

Activity

4Taking the stairs

Everyday movement

Short bursts that accumulate without needing time set aside.

Stair climbing is vigorous in short bursts and builds leg strength alongside cardiovascular benefit.

Intensity: Vigorous in short bursts
Suggested dose: Whenever available, aiming for several flights daily
Effect on glucose: Short bursts improve post-meal glucose disposal
Hypoglycaemia risk: Low, though vigorous bursts can occasionally raise glucose transiently.
Suits: Those without significant knee problems or balance impairment
Take advice first: Poor balance, significant peripheral neuropathy affecting proprioception, severe knee osteoarthritis
Progression: Add flights gradually; descend by lift if knees complain
Evidence: Moderate to strong. Stair-climbing trials show improvements in fitness and post-prandial glucose from small daily volumes.
What you need: Handrail use where balance is uncertain

Activity

5Breaking up sitting every 30 minutes

Everyday movement

Sitting time affects glucose independently of planned exercise.

Three minutes of light movement every half hour changes the glucose profile of a sedentary day.

Intensity: Light
Suggested dose: 3 minutes of standing or walking every 30 minutes
Effect on glucose: Reduces average glucose across a working day, independently of formal exercise
Hypoglycaemia risk: Negligible
Suits: Everyone, particularly desk workers
Take advice first: Nothing
Progression: Set a recurring alarm; pair with drinking water
Evidence: Strong. Randomised crossover trials show meaningful reductions in post-prandial glucose and insulin from interrupting sitting.
What you need: A timer or watch reminder

Activity

6Walking football or walking netball

Everyday movement

Team sport without the impact or sprinting.

Designed for older or deconditioned players, it retains the social pull that drives attendance.

Intensity: Moderate
Suggested dose: One or two sessions a week of 45 to 60 minutes
Effect on glucose: Improves insulin sensitivity; the social structure aids long-term adherence
Hypoglycaemia risk: Moderate on insulin or sulfonylureas; carry fast-acting carbohydrate.
Suits: Those wanting sport without running
Take advice first: Recent cardiac events without clearance; active foot ulceration
Progression: Increase from one to two sessions a week
Evidence: Moderate to strong. Trials of walking football report improved fitness, blood pressure and glycaemic measures, with unusually high retention.
What you need: Supportive footwear and shin protection

Activity

7Gardening

Everyday movement

Moderate activity that does not feel like exercise.

Digging, weeding and carrying combine cardiovascular and resistance elements.

Intensity: Light to moderate, occasionally vigorous
Suggested dose: 30 to 60 minutes, several times a week in season
Effect on glucose: Comparable to moderate walking when sustained
Hypoglycaemia risk: Moderate over long sessions on insulin; break for a snack if a session runs long.
Suits: Most people; adaptable to raised beds where bending is difficult
Take advice first: Barefoot or open-sandal gardening with any neuropathy, given the puncture risk
Progression: Extend session length; add heavier tasks such as digging
Evidence: Moderate. Cohort evidence links gardening with lower cardiovascular risk; direct glycaemic trials are limited.
What you need: Gloves, closed sturdy footwear, kneeling pad

Activity

8Household cleaning and stair-based chores

Everyday movement

Counts toward the weekly total when done briskly.

Vacuuming, mopping and carrying laundry upstairs reach moderate intensity if done at pace.

Intensity: Light to moderate
Suggested dose: Accumulated across the week
Effect on glucose: Contributes to overall daily energy expenditure and reduced sitting time
Hypoglycaemia risk: Low
Suits: Everyone
Take advice first: Nothing specific
Progression: Do it in one continuous block rather than in short scattered efforts
Evidence: Moderate. Incidental activity contributes measurably to total expenditure, though it is less potent than structured exercise.
What you need: None

Activity

9Walking the dog

Everyday movement

External obligation is the most reliable adherence device known.

Dog owners walk substantially more than non-owners, and the walking is far more consistent.

Intensity: Light to moderate
Suggested dose: Twice daily, 20 to 30 minutes
Effect on glucose: As for walking, with better consistency
Hypoglycaemia risk: Low to moderate depending on medication
Suits: Those able to keep a dog, or to borrow one
Take advice first: Strong pulling dogs where balance or neuropathy is a concern
Progression: Extend one of the two daily walks
Evidence: Moderate to strong. Cohort studies consistently show higher activity levels in dog owners; causation is plausible but not proven.
What you need: Supportive shoes; a short lead for control

Activity

10Nordic walking

Everyday movement

Poles bring the upper body in and reduce joint load.

Using poles raises energy expenditure at the same walking speed while reducing knee loading.

Intensity: Moderate
Suggested dose: 30 to 45 minutes, three times a week
Effect on glucose: Greater energy expenditure than walking at the same pace, with proportionate glycaemic benefit
Hypoglycaemia risk: Moderate on insulin; the higher expenditure matters.
Suits: Those with knee or hip problems, and anyone wanting more from a walk
Take advice first: Significant balance impairment without instruction
Progression: Learn technique first; poor technique loses most of the benefit
Evidence: Moderate to strong. Trials show higher oxygen uptake and improved glycaemic measures compared with ordinary walking.
What you need: Properly sized poles and a short technique lesson

Activity

11Stationary cycling

Cardiovascular

Non-weight-bearing, controllable, and safe with neuropathy.

Cycling removes the impact and foot-pressure concerns that complicate walking in neuropathy.

Intensity: Light to vigorous, entirely adjustable
Suggested dose: 30 minutes, three to five times a week
Effect on glucose: Reliable reduction in post-exercise glucose and improved insulin sensitivity
Hypoglycaemia risk: Moderate to high on insulin during longer sessions; check before, and after long sessions.
Suits: Those with foot problems, joint pain, obesity or balance concerns
Take advice first: Proliferative retinopathy where very vigorous effort is contraindicated until treated
Progression: Increase duration first, then resistance
Evidence: Strong. Cycling programmes reduce HbA1c and improve cardiorespiratory fitness in randomised trials.
What you need: Correct saddle height; padded shorts for longer sessions

Activity

12Outdoor cycling on level ground

Cardiovascular

Sustainable, sociable and useful for transport.

Cycling for transport converts exercise time into travel time, which solves the commonest excuse.

Intensity: Moderate
Suggested dose: 30 to 60 minutes, three times a week
Effect on glucose: Substantial improvement in insulin sensitivity with regular sessions
Hypoglycaemia risk: Higher risk than walking; carry fast-acting carbohydrate and identify a safe stopping point.
Suits: Those with reasonable balance and confidence in traffic
Take advice first: Significant peripheral neuropathy affecting balance; severe retinopathy pending treatment
Progression: Increase distance before speed; add gentle gradients later
Evidence: Strong. Cohort studies link cycling for transport with lower diabetes incidence; trials show fitness and glycaemic benefits.
What you need: Helmet, lights, and a phone with medical identification

Activity

13Swimming, front crawl or breaststroke

Cardiovascular

Full body, no impact, and kind to painful joints.

The water supports body weight, which makes swimming feasible where land exercise is painful.

Intensity: Moderate to vigorous
Suggested dose: 30 minutes, two to three times a week
Effect on glucose: Effective at improving insulin sensitivity; response varies with intensity
Hypoglycaemia risk: Important. Hypoglycaemia in water is dangerous. Never swim alone if on insulin or a sulfonylurea; tell the lifeguard.
Suits: Those with arthritis, back pain, obesity or foot problems
Take advice first: Open foot wounds or active ulceration, because of infection risk in pool water
Progression: Add a length or two per session rather than swimming faster
Evidence: Strong. Aquatic exercise trials show improvements in HbA1c, blood pressure and functional capacity.
What you need: Pool shoes in changing areas to protect the feet

Activity

14Aqua aerobics

Cardiovascular

Structured, supervised and gentle on joints.

Water resistance provides both cardiovascular and light resistance training with minimal joint stress.

Intensity: Light to moderate
Suggested dose: Two to three classes a week
Effect on glucose: Modest but consistent improvement in glycaemic measures
Hypoglycaemia risk: As for swimming: tell the instructor, and never attend alone if at risk.
Suits: Older adults, those with arthritis or significant obesity
Take advice first: Open foot wounds; incontinence without appropriate management
Progression: Move to deeper water, which increases resistance
Evidence: Moderate to strong. Randomised trials in type 2 diabetes report improved HbA1c and physical function.
What you need: Pool shoes; a woggle or float if confidence is low

Activity

15Rowing machine

Cardiovascular

Combines cardiovascular and resistance work without impact.

Rowing recruits legs, back and arms in one movement, which is efficient for limited training time.

Intensity: Moderate to vigorous
Suggested dose: 20 to 30 minutes, twice a week
Effect on glucose: Strong acute effect on glucose disposal because of the large muscle mass involved
Hypoglycaemia risk: Moderate to high on insulin; the muscle mass recruited is substantial.
Suits: Those without significant lower back problems
Take advice first: Acute back pain; poor technique makes back injury likely
Progression: Learn technique before intensity; keep the stroke rate low and the drive strong
Evidence: Strong for the general principle that combined large-muscle exercise improves glycaemic control; rowing-specific trials are fewer.
What you need: Instruction on technique, which matters more here than in most activities

Activity

16Elliptical trainer

Cardiovascular

Low impact with an upper body component.

The elliptical removes impact while allowing a substantial cardiovascular effort.

Intensity: Light to vigorous
Suggested dose: 30 minutes, three times a week
Effect on glucose: Comparable to brisk walking or cycling at matched effort
Hypoglycaemia risk: Moderate on insulin over longer sessions.
Suits: Those with joint pain or a history of impact injury
Take advice first: Balance impairment severe enough to make the moving platform unsafe
Progression: Add resistance and incline before increasing duration
Evidence: Moderate to strong. Benefits follow the general aerobic exercise evidence rather than machine-specific trials.
What you need: Supportive shoes; hold the moving handles to include the upper body

Activity

17Dancing

Cardiovascular

Social, enjoyable, and unusually well adhered to.

Dance combines aerobic work, balance training and social contact, which together predict long-term participation.

Intensity: Moderate to vigorous
Suggested dose: One to two classes a week
Effect on glucose: Comparable to other moderate aerobic activity
Hypoglycaemia risk: Moderate on insulin; sessions can run long without noticing.
Suits: Most people; styles range from seated dance to vigorous forms
Take advice first: Significant balance impairment without support; active foot ulceration
Progression: Choose a style and progress within it rather than switching frequently
Evidence: Moderate to strong. Trials of dance programmes in type 2 diabetes show improved HbA1c, fitness and quality of life, with good retention.
What you need: Shoes appropriate to the style; check feet after sessions

Activity

18Stationary cycling intervals, supervised

Cardiovascular

Short hard efforts produce large effects in limited time.

Alternating one minute hard with two minutes easy achieves in twenty minutes what steady work needs longer for.

Intensity: Vigorous in bursts
Suggested dose: 20 minutes, twice a week, once base fitness is established
Effect on glucose: Marked improvement in insulin sensitivity, sometimes exceeding steady moderate exercise
Hypoglycaemia risk: Variable. Vigorous intervals can raise glucose acutely then lower it hours later. Monitor closely at first.
Suits: Those already exercising regularly, after clinical review
Take advice first: Uncontrolled hypertension, proliferative retinopathy, unstable cardiac disease, autonomic neuropathy
Progression: Begin with 30-second efforts; add one interval per fortnight
Evidence: Strong for efficacy from randomised trials. Note the safety exclusions are real, and a clinical review before starting is warranted.
What you need: Heart rate monitor if available; glucose meter to hand

Activity

19Hiking on even terrain

Cardiovascular

Long duration at moderate intensity, with good glycaemic effect.

Extended walking on trails produces a prolonged reduction in glucose and a large energy expenditure.

Intensity: Moderate
Suggested dose: One to three hours at weekends
Effect on glucose: Prolonged glucose lowering that can extend well into the following day
Hypoglycaemia risk: High on insulin over long durations. Plan carbohydrate intake and carry more than you expect to need.
Suits: Those with established walking fitness
Take advice first: Uneven ground with significant neuropathy, because of ankle and foot injury risk
Progression: Add distance gradually; the descent causes more soreness than the climb
Evidence: Strong for prolonged moderate exercise effects on insulin sensitivity.
What you need: Broken-in boots, spare socks, glucose tablets, water, a phone

Activity

20Recumbent cycling

Cardiovascular

The safest cardiovascular option where balance is poor.

The seated back-supported position removes balance demands and reduces back strain.

Intensity: Light to moderate
Suggested dose: 20 to 40 minutes, three times a week
Effect on glucose: Effective glucose lowering with minimal risk
Hypoglycaemia risk: Moderate on insulin over longer sessions.
Suits: Those with balance impairment, back pain, severe obesity or peripheral neuropathy
Take advice first: Little; this is among the most broadly suitable options
Progression: Increase resistance once 30 minutes is comfortable
Evidence: Moderate to strong. Follows the aerobic exercise evidence, with a better safety profile for at-risk groups.
What you need: None beyond the machine

Activity

21Resistance bands, full body

Strength

The safest entry point to resistance training.

Bands provide graded resistance without the injury risk of free weights, and cost very little.

Intensity: Moderate
Suggested dose: Two to three sessions a week, 8 to 10 exercises
Effect on glucose: Builds muscle mass, which increases the body's capacity to store glucose
Hypoglycaemia risk: Lower acute risk than aerobic exercise, but delayed hypoglycaemia can occur hours later on insulin.
Suits: Beginners, older adults, those exercising at home
Take advice first: Active retinopathy where straining is a concern, until reviewed
Progression: Move to a heavier band, or add repetitions to 15 before progressing
Evidence: Strong. Resistance training reduces HbA1c independently of aerobic exercise, and the combination outperforms either alone.
What you need: A set of graded bands and a door anchor

Activity

22Sit-to-stand from a chair

Strength

The single most functional strength exercise for older adults.

Standing from a chair without hands trains the muscles that determine independence in later life.

Intensity: Light to moderate
Suggested dose: Three sets of 10, most days
Effect on glucose: Contributes to muscle maintenance and glucose disposal capacity
Hypoglycaemia risk: Low
Suits: Almost everyone, including the frail
Take advice first: Acute knee or hip injury
Progression: Lower the chair height, then hold a weight to the chest
Evidence: Strong. Sit-to-stand capacity predicts function and mortality, and improves with training in trials.
What you need: A stable chair against a wall

Activity

23Bodyweight squats to a chair

Strength

Large muscle group work with a built-in safety stop.

Squatting to touch a chair before rising gives depth control and a fallback.

Intensity: Moderate
Suggested dose: Three sets of 8 to 12, twice a week
Effect on glucose: Large leg muscles are the body's main glucose sink; training them improves disposal
Hypoglycaemia risk: Low acutely; watch for delayed effects on insulin.
Suits: Most people once sit-to-stand is comfortable
Take advice first: Significant knee osteoarthritis with pain on loading
Progression: Slow the descent, then add a held weight
Evidence: Strong for resistance training generally; leg-focused work has the largest effect on glucose disposal.
What you need: A chair or bench

Activity

24Wall press-ups

Strength

Upper body strength without floor work.

Standing press-ups against a wall allow the load to be adjusted simply by foot position.

Intensity: Light to moderate
Suggested dose: Three sets of 10, twice a week
Effect on glucose: Contributes to overall muscle maintenance
Hypoglycaemia risk: Low
Suits: Beginners and those unable to get to the floor
Take advice first: Acute shoulder injury
Progression: Step the feet further back, then progress to a bench, then the floor
Evidence: Strong for the general resistance training evidence base.
What you need: A clear wall

Activity

25Dumbbell rows

Strength

Back strength that counters postural decline.

Pulling movements are commonly neglected, and their absence shows in posture over time.

Intensity: Moderate
Suggested dose: Three sets of 8 to 12, twice a week
Effect on glucose: Adds to total training volume and muscle mass
Hypoglycaemia risk: Low acutely; delayed effects possible on insulin.
Suits: Most people with a stable support for the free hand
Take advice first: Acute back pain; proliferative retinopathy pending treatment
Progression: Increase weight when 12 repetitions become comfortable
Evidence: Strong for resistance training and HbA1c reduction from randomised trials.
What you need: A pair of dumbbells and a bench or chair

Activity

26Leg press machine

Strength

Heavy leg work with back support and a controlled path.

The machine allows meaningful loading without the technique demands of a barbell squat.

Intensity: Moderate to vigorous
Suggested dose: Three sets of 8 to 12, twice a week
Effect on glucose: Among the most effective single exercises for improving glucose disposal capacity
Hypoglycaemia risk: Low acutely, but delayed hypoglycaemia after heavy sessions is well recognised on insulin.
Suits: Those with gym access, including beginners
Take advice first: Uncontrolled hypertension and proliferative retinopathy, because of the pressure response to heavy straining
Progression: Add weight gradually, keeping repetitions at eight or more
Evidence: Strong. Progressive resistance training trials in type 2 diabetes show HbA1c reductions comparable to some medications.
What you need: Gym access and a brief induction

Activity

27Farmer's carry

Strength

Grip, core and posture in one simple movement.

Carrying a weight in each hand for distance builds grip strength, which predicts mortality independently.

Intensity: Moderate
Suggested dose: Four carries of 20 to 30 metres, twice a week
Effect on glucose: Contributes to overall training volume
Hypoglycaemia risk: Low
Suits: Most people with adequate balance
Take advice first: Significant balance impairment; acute back or shoulder injury
Progression: Increase weight before distance
Evidence: Moderate to strong. Grip strength is a well-established predictor of outcomes; training effects on it are demonstrable.
What you need: Two dumbbells, kettlebells or shopping bags

Activity

28Step-ups

Strength

Single-leg strength with a functional carryover to stairs.

Step-ups train each leg independently, which reveals and corrects side-to-side differences.

Intensity: Moderate
Suggested dose: Three sets of 8 per leg, twice a week
Effect on glucose: Leg-dominant work with good glucose disposal effect
Hypoglycaemia risk: Low acutely; delayed effects possible.
Suits: Those with reasonable balance
Take advice first: Significant neuropathy affecting proprioception, unless holding a rail
Progression: Raise the step height, then hold weights
Evidence: Strong for resistance training generally.
What you need: A stable step and a rail or wall for balance

Activity

29Calf raises

Strength

Supports circulation in the lower leg.

The calf muscles act as a pump that assists venous return from the legs.

Intensity: Light
Suggested dose: Three sets of 15, most days
Effect on glucose: Small direct effect; the circulatory benefit is the point
Hypoglycaemia risk: Negligible
Suits: Almost everyone, including those doing them seated
Take advice first: Acute Achilles injury
Progression: Progress from two legs to one, then add a step for greater range
Evidence: Moderate. The circulatory mechanism is established; specific outcome evidence in diabetes is limited.
What you need: A wall or chair for balance

Activity

30Kettlebell deadlift

Strength

Teaches the hip hinge, the most useful pattern in daily life.

Lifting from the floor with a hinged hip and neutral spine protects the back in everyday tasks.

Intensity: Moderate
Suggested dose: Three sets of 8, twice a week
Effect on glucose: Large muscle recruitment with good metabolic effect
Hypoglycaemia risk: Low acutely; delayed effects possible on insulin.
Suits: Those able to learn the movement, ideally with instruction
Take advice first: Acute back pain; proliferative retinopathy pending review; uncontrolled hypertension
Progression: Add weight only once the movement is consistent
Evidence: Strong for resistance training; technique instruction meaningfully reduces injury risk.
What you need: One kettlebell and, ideally, one coaching session

Activity

31Progressive resistance training programme, supervised

Strength

The structured version, and the one the trials tested.

Supervised programmes produce larger effects than unsupervised ones, chiefly through progression and adherence.

Intensity: Moderate to vigorous
Suggested dose: Two to three sessions a week for at least 12 weeks
Effect on glucose: Reduces HbA1c meaningfully and increases lean mass
Hypoglycaemia risk: Delayed hypoglycaemia is a genuine consideration on insulin, sometimes 6 to 12 hours after a session.
Suits: Anyone medically cleared, including older adults
Take advice first: Uncontrolled hypertension, proliferative retinopathy, unstable cardiac disease, until reviewed
Progression: Follow the programme's progression rather than improvising
Evidence: Strong. This is the form of resistance training tested in the trials showing HbA1c reduction; supervision is a consistent predictor of effect size.
What you need: Gym access and a qualified instructor

Activity

32Combined aerobic and resistance session

Strength

The combination outperforms either component alone.

Trials comparing aerobic, resistance and combined training consistently favour the combination.

Intensity: Moderate
Suggested dose: Three sessions a week, each with both elements
Effect on glucose: The largest HbA1c reductions reported for exercise interventions
Hypoglycaemia risk: Moderate; the combination of both stresses can produce a larger delayed drop.
Suits: Those able to commit to structured sessions
Take advice first: As for the individual components
Progression: Keep both elements present rather than letting one lapse
Evidence: Strong. Randomised trials directly comparing modalities favour combined training for HbA1c.
What you need: Gym access or home equipment

Activity

33Chair-based strength circuit

Strength

Resistance training for those who cannot stand for long.

Seated exercises can load the upper body and, with bands, the legs.

Intensity: Light to moderate
Suggested dose: Three times a week
Effect on glucose: Modest but real contribution to muscle maintenance
Hypoglycaemia risk: Low
Suits: Frail older adults, those with severe arthritis, and anyone recovering from illness
Take advice first: Little
Progression: Add band resistance, then repetitions
Evidence: Moderate to strong. Chair-based programmes improve strength and function in older adults in randomised trials.
What you need: A stable chair and light bands

Activity

34Grip strength work

Strength

A simple marker with independent prognostic value.

Grip strength correlates with overall muscle mass and predicts cardiovascular outcomes.

Intensity: Light
Suggested dose: Daily, a few minutes
Effect on glucose: Indirect, through muscle maintenance
Hypoglycaemia risk: Negligible
Suits: Everyone, including the frail
Take advice first: Active hand arthritis flare
Progression: Move to a stiffer gripper or heavier carry
Evidence: Moderate. Grip strength is a robust prognostic marker; whether training it changes outcomes is less certain.
What you need: A hand gripper or a pair of heavy bags

Activity

35Tai chi

Balance and flexibility

Balance training with the best falls evidence of any activity.

Slow weight transfers train balance and proprioception, which matter more as neuropathy develops.

Intensity: Light
Suggested dose: Two sessions a week
Effect on glucose: Modest glycaemic effect; the balance and falls benefit is the main value
Hypoglycaemia risk: Low
Suits: Older adults, those with neuropathy, and anyone at falls risk
Take advice first: Little, though standing forms need supervision where balance is poor
Progression: Learn a form properly rather than accumulating fragments
Evidence: Strong for falls and balance. Meta-analyses also report small HbA1c improvements, though these are less certain than the balance findings.
What you need: Flat shoes or bare feet on a safe surface, with feet checked afterwards

Activity

36Yoga, gentle styles

Balance and flexibility

Flexibility, balance and stress reduction together.

Chronic stress raises cortisol and glucose, so the stress pathway is a genuine mechanism here.

Intensity: Light to moderate
Suggested dose: Two to three sessions a week
Effect on glucose: Meta-analyses report modest HbA1c reductions, though trial quality is variable
Hypoglycaemia risk: Low
Suits: Most people; chair yoga suits those with limited mobility
Take advice first: Inversions and strong forward folds with proliferative retinopathy or uncontrolled hypertension. Tell the teacher.
Progression: Attend the same class regularly rather than varying styles
Evidence: Moderate. Meta-analyses are favourable but the trials are often small and at risk of bias. The stress and sleep benefits are more consistent.
What you need: A mat; tell the instructor about any retinopathy or neuropathy

Activity

37Pilates

Balance and flexibility

Core and postural control with controlled loading.

Pilates emphasises controlled movement, which suits those returning to activity after a long gap.

Intensity: Light to moderate
Suggested dose: Two sessions a week
Effect on glucose: Modest; the postural and core benefits are the main value
Hypoglycaemia risk: Low
Suits: Those with back pain or poor core control
Take advice first: Strong breath-holding movements with uncontrolled hypertension or retinopathy
Progression: Move from mat to equipment-based work if available
Evidence: Moderate. Evidence for back pain and function is reasonable; glycaemic evidence is limited.
What you need: A mat and, ideally, small-group instruction

Activity

38Standing balance practice

Balance and flexibility

Directly addresses the falls risk that neuropathy creates.

Peripheral neuropathy degrades the position sense that balance depends on, and balance can be trained.

Intensity: Light
Suggested dose: A few minutes daily, beside a support
Effect on glucose: None directly
Hypoglycaemia risk: Negligible
Suits: Anyone with neuropathy or a history of falls
Take advice first: Practising without a support within reach
Progression: Narrow the stance, then close the eyes, then stand on one leg, always beside a rail
Evidence: Strong. Balance training reduces falls in older adults, and neuropathy substantially raises falls risk.
What you need: A kitchen worktop or sturdy chair to hold

Activity

39Stretching for the calves and hamstrings

Balance and flexibility

Maintains the ankle range that safe walking depends on.

Limited ankle dorsiflexion alters gait and raises forefoot pressure, which matters greatly with neuropathy.

Intensity: Light
Suggested dose: Daily, 30 seconds per stretch
Effect on glucose: None directly
Hypoglycaemia risk: Negligible
Suits: Everyone, particularly those with foot risk
Take advice first: Bouncing or forcing the stretch
Progression: Hold longer rather than pushing harder
Evidence: Moderate. Reduced ankle mobility is associated with higher plantar pressures and ulcer risk in diabetes.
What you need: A wall or step

Activity

40Foot and ankle mobility exercises

Balance and flexibility

Specifically relevant to preventing foot complications.

Toe and ankle movement helps maintain the joint mobility that distributes pressure across the foot.

Intensity: Light
Suggested dose: Daily, five minutes
Effect on glucose: None directly
Hypoglycaemia risk: Negligible
Suits: Anyone with diabetes, particularly with any neuropathy
Take advice first: Active ulceration, where podiatric advice takes precedence
Progression: Add resistance with a band around the forefoot
Evidence: Moderate. Foot exercise programmes have shown improvements in plantar pressure distribution and neuropathy symptoms in randomised trials.
What you need: A light band; a mirror to inspect the feet afterwards

Activity

41Seated marching and leg extensions

Adapted and low-impact

Movement for those confined to a chair.

Seated activity still lowers glucose and preserves function where standing exercise is not possible.

Intensity: Light
Suggested dose: 10 to 20 minutes, most days
Effect on glucose: Measurable reduction in post-meal glucose even from seated activity
Hypoglycaemia risk: Low
Suits: Wheelchair users, the frail, those recovering from surgery or ulceration
Take advice first: Little
Progression: Add ankle weights or a band
Evidence: Moderate to strong. Seated exercise trials show glycaemic and functional benefits in those unable to stand.
What you need: A stable chair; optional light ankle weights

Activity

42Upper body ergometer

Adapted and low-impact

Cardiovascular exercise with no load on the feet.

An arm crank allows genuine aerobic training while the feet are entirely offloaded.

Intensity: Light to vigorous
Suggested dose: 20 to 30 minutes, three times a week
Effect on glucose: Effective, though the smaller muscle mass means slightly less effect than leg work
Hypoglycaemia risk: Moderate on insulin during longer sessions.
Suits: Those with foot ulceration, amputation or severe foot risk
Take advice first: Acute shoulder injury
Progression: Increase duration, then resistance
Evidence: Moderate to strong. Arm ergometry improves fitness and glycaemic measures where leg exercise is not possible.
What you need: Gym or clinic access to an arm ergometer

Activity

43Water walking

Adapted and low-impact

Weight-bearing reduced by around two thirds.

Chest-deep water removes most of the load from painful joints while adding resistance.

Intensity: Light to moderate
Suggested dose: 20 to 30 minutes, two to three times a week
Effect on glucose: Comparable to land walking at equivalent effort
Hypoglycaemia risk: As for swimming: never alone if on insulin or a sulfonylurea.
Suits: Severe obesity, arthritis, recovery from injury
Take advice first: Open wounds or active ulceration
Progression: Move to shallower water, which increases weight-bearing
Evidence: Moderate to strong. Aquatic exercise improves function and glycaemic measures in randomised trials.
What you need: Pool shoes for grip and foot protection

Activity

44Chair yoga

Adapted and low-impact

Flexibility and breathing without floor transfers.

All the breathing and much of the stretching of yoga, from a seated position.

Intensity: Light
Suggested dose: Two to three times a week
Effect on glucose: Modest, chiefly through the stress pathway
Hypoglycaemia risk: Low
Suits: The frail, those with balance problems, and anyone unable to get to the floor
Take advice first: Strong forward folds with retinopathy
Progression: Add standing poses using the chair for support
Evidence: Moderate. Follows the yoga evidence, with better accessibility.
What you need: A stable chair without arms

Activity

45Hand cycling

Adapted and low-impact

Outdoor cardiovascular exercise with the feet offloaded.

Hand cycles allow genuine outdoor exercise for those unable to use their legs.

Intensity: Moderate to vigorous
Suggested dose: 30 minutes, three times a week
Effect on glucose: Effective aerobic stimulus despite the smaller muscle mass
Hypoglycaemia risk: Moderate to high on insulin; plan carbohydrate for longer rides.
Suits: Wheelchair users and those with lower limb amputation
Take advice first: Acute shoulder pathology
Progression: Build duration before speed
Evidence: Moderate. Follows the aerobic evidence base; specific trials in this population are fewer but favourable.
What you need: Hand cycle and gloves; shoulder care matters

Activity

46Physiotherapist-supervised exercise after ulceration

Adapted and low-impact

Activity should continue during ulcer healing, in modified form.

Stopping all activity during healing costs fitness and glycaemic control; the answer is offloading, not inactivity.

Intensity: Light to moderate, non-weight-bearing
Suggested dose: As prescribed by the clinical team
Effect on glucose: Maintains glycaemic control during a period when it often deteriorates
Hypoglycaemia risk: Depends on the modality and medication
Suits: Those with active or recently healed foot ulceration
Take advice first: Any weight-bearing on the affected foot without explicit clearance
Progression: Only under podiatric and physiotherapy guidance
Evidence: Moderate to strong. Guidelines support maintaining non-weight-bearing activity during offloading rather than complete rest.
What you need: As prescribed; offloading device as directed

Activity

47Structured 12-week supervised exercise programme

Programmes and structure

The intervention that the strongest trials actually tested.

Supervision, progression and a defined endpoint together produce far larger effects than general advice.

Intensity: Moderate, individually prescribed
Suggested dose: Three sessions a week for 12 weeks, then a maintenance plan
Effect on glucose: The largest and most reliable HbA1c reductions in the exercise literature
Hypoglycaemia risk: Managed as part of the programme, with medication review at the start
Suits: Anyone newly diagnosed or newly motivated
Take advice first: Nothing, though a pre-participation review is appropriate
Progression: Plan the maintenance phase before the programme ends, since that is where most gains are lost
Evidence: Strong. Supervised programmes consistently outperform advice alone in randomised trials.
What you need: Referral through your GP or diabetes team, where local schemes exist

Activity

48Daily step target, individually set

Programmes and structure

A measurable target beats a vague intention.

Setting a target a little above the current baseline works better than adopting a generic figure.

Intensity: Light to moderate
Suggested dose: Add 2,000 steps to your current daily average, then reassess monthly
Effect on glucose: Higher step counts are associated with lower HbA1c and lower mortality, with benefits appearing well below 10,000
Hypoglycaemia risk: Low to moderate depending on medication
Suits: Everyone with a phone or watch
Take advice first: Nothing
Progression: Increase by 1,000 steps a month rather than setting an unreachable figure
Evidence: Strong. Cohort evidence shows benefits accruing from around 4,000 steps upward, with no sharp threshold at 10,000.
What you need: A phone or watch; the accuracy matters less than the consistency

Activity

49Exercising with another person

Programmes and structure

The single strongest predictor of still exercising in six months.

Social commitment outperforms almost every other adherence strategy studied.

Intensity: Any
Suggested dose: At least one session a week with someone else
Effect on glucose: Indirect, through sustained participation
Hypoglycaemia risk: A partner who knows the signs of hypoglycaemia is a genuine safety benefit
Suits: Everyone
Take advice first: Nothing
Progression: Fix a standing day and time rather than arranging each week
Evidence: Strong. Social support is among the most consistent predictors of exercise adherence in behavioural trials.
What you need: None

Activity

50Pre-exercise medication and glucose review

Programmes and structure

The step that makes everything else in this album safe.

Exercise changes insulin requirements, and doses set for a sedentary week may cause hypoglycaemia once activity begins.

Intensity: Not applicable
Suggested dose: Before starting any new programme, and again after four weeks
Effect on glucose: Prevents both hypoglycaemia and the discouragement that follows it
Hypoglycaemia risk: This entry exists precisely to manage that risk
Suits: Essential for anyone on insulin or a sulfonylurea; advisable for everyone
Take advice first: Do not adjust prescribed doses yourself without guidance
Progression: Review again whenever the training load changes materially
Evidence: Strong. Guidelines from major diabetes bodies recommend medication review when activity increases, because the interaction is well documented and clinically significant.
What you need: An appointment with your GP, diabetes nurse or specialist team

Activity