🩸 Best foods for healthy blood sugar

How your body handles blood sugar

Glucose is your body's main source of energy. Insulin, made by the pancreas, keeps blood glucose in the normal range. NIH NIDDK

1. 1🍞Food becomes blood glucose
2. 2🔑The pancreas releases insulin
3. 3🧱Cells must respond to insulin
4. 4⚠️What high blood sugar damages

1. 1

   🍞 Food becomes blood glucose

   Root cause: Sugary drinks and refined carbohydrates send glucose into the blood fast.

   🥗 Eat

   • Oat flakes (rolled oats)Gentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (50 g): 5.5 g fibre · 0.37 g sugars

     The evidence

     EU claim Smaller sugar spike

     “Consumption of beta-glucans from oats or barley as part of a meal contributes to the reduction of the blood glucose rise after that meal.” Effect with at least 4 g of beta-glucans from oats or barley for each 30 g of available carbohydrates per meal. EUR-LexEU Commission

     All nutrients & evidence for oat flakes (rolled oats) →
   • Oat bran flakesGentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (30 g): 3.9 g fibre · 0.22 g sugars

     The evidence

     EU claim Smaller sugar spike

     “Consumption of beta-glucans from oats or barley as part of a meal contributes to the reduction of the blood glucose rise after that meal.” Effect with at least 4 g of beta-glucans from oats or barley for each 30 g of available carbohydrates per meal. EUR-LexEU Commission

     All nutrients & evidence for oat bran flakes →
   • BroccoliGentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (150 g): 4.5 g fibre · 2.1 g sugars

     The evidence

     Official Fruit, veg & whole grains

     Eat at least 400 g of fruit and vegetables a day and get carbohydrates mainly from whole grains, vegetables, fruit and pulses, with at least 25 g of fibre. WHOWHO

     All nutrients & evidence for broccoli →
   • CarrotsGentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (100 g): 2.9 g fibre · 6.4 g sugars

     The evidence

     Official Fruit, veg & whole grains

     Eat at least 400 g of fruit and vegetables a day and get carbohydrates mainly from whole grains, vegetables, fruit and pulses, with at least 25 g of fibre. WHOWHO

     All nutrients & evidence for carrots →
   • AppleGentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (150 g): 3.4 g fibre · 15.7 g sugars

     The evidence

     Official Fruit, veg & whole grains

     Eat at least 400 g of fruit and vegetables a day and get carbohydrates mainly from whole grains, vegetables, fruit and pulses, with at least 25 g of fibre. WHOWHO

     All nutrients & evidence for apple →
   • OrangeGentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (150 g): 3.3 g fibre · 13.3 g sugars

     The evidence

     Official Fruit, veg & whole grains

     Eat at least 400 g of fruit and vegetables a day and get carbohydrates mainly from whole grains, vegetables, fruit and pulses, with at least 25 g of fibre. WHOWHO

     All nutrients & evidence for orange →
   • Lentils, boiledGentler on blood sugar

     How it helps your blood sugar

     Blood glucose comes from the food you eat. WHO advises getting carbohydrates mainly from whole grains, vegetables, fruit and pulses, and oat and barley beta-glucan is authorised to reduce the rise in blood sugar after a meal. NIH NIDDKWHOEUR-Lex

     One portion (150 g): 10.8 g fibre · 0.75 g sugars

     The evidence

     Official Fruit, veg & whole grains

     Eat at least 400 g of fruit and vegetables a day and get carbohydrates mainly from whole grains, vegetables, fruit and pulses, with at least 25 g of fibre. WHOWHO

     All nutrients & evidence for lentils, boiled →

   🚫 Cut down on

   • Sugary drinks & sweetsOfficial

     Keep free sugars below 10 % of energy; sweetened drinks supply about half of added sugars. WHONIH NHLBI

   How this step works · what slows it down · sources

   Glucose is your body's main source of energy. Your body makes some glucose itself; the rest comes from the food you eat. NIH NIDDK

   “EU claim” items use the exact wording of Reg. (EU) No 432/2012 EUR-Lex; listed foods meet the legal condition of use (amounts per normal portion, BLS 4.0 / USDA).

2. 2

   🔑 The pancreas releases insulin

   Root cause: When cells respond poorly to insulin, over time the pancreas may not make enough.

   🏃 Do

   • Lose 5–7 % if overweightTrials

     In the Diabetes Prevention Program, people at high risk who lost 5 % to 7 % of their starting weight, through diet changes and more activity, reduced their chance of developing type 2 diabetes. NIH NIDDKNIH NIDDK
   • 150 min activity / weekOfficial

     Adults should do at least 150 minutes of moderate-intensity aerobic activity, such as brisk walking, every week — for example 30 minutes on 5 days. CDCWHO

   How this step works · what slows it down · sources

   Insulin is a hormone made by the pancreas. It helps glucose move from your blood into your cells, where it is used for energy. NIH NIDDK

   🔻 What can slow this down

   • If your cells don't respond well to insulin, over time your pancreas may not make enough insulin to move the extra glucose into cells. NIH NIDDK
   • In type 1 diabetes the immune system destroys the insulin-making cells, and people need insulin every day. NIH NIDDK

   ✅ Also helps

   • Healthy living — healthy foods and drinks and being physically active — may help prevent or reverse insulin resistance and prediabetes. NIH NIDDK

   The advice for this step comes from official health agencies and published research — the badge on each line shows which.

3. 3

   🧱 Cells must respond to insulin

   Root cause: Excess body weight and inactivity make cells respond poorly to insulin (type 2).

   🏃 Do

   • Lose 7 % + walk 150 minTrials

     In the Diabetes Prevention Program, people who lost 7 % of their weight and exercised 150 minutes a week cut their risk of type 2 diabetes by 58 % (71 % in people over 60). NIH NIDDK
   • Healthy weight, no smokingOfficial

     A healthy diet, at least 150 minutes of activity a week, a healthy body weight and not smoking are the best ways to prevent or delay type 2 diabetes. WHO

   How this step works · what slows it down · sources

   In type 2 diabetes, cells do not use insulin well, and the pancreas struggles to keep blood glucose in the normal range. NIH NIDDK

   🔻 What can slow this down

   • Overweight or obesity and a family history of diabetes are key risk factors. NIH NIDDK

   The advice for this step comes from official health agencies and published research — the badge on each line shows which.

4. 4

   ⚠️ What high blood sugar damages

   Root cause: Glucose that stays high damages artery linings and the kidneys.

   🥗 Eat

   • SalmonProtects the arteries

     How it helps your blood sugar

     Blood sugar that stays high damages the inner lining of the arteries and causes plaque. Heart-healthy eating helps prevent or delay that plaque. NIH NHLBINIH NHLBINIH NHLBI

     One portion (125 g): 3 g saturated fat

     The evidence

     Official Heart-healthy staples

     NIH heart-healthy foods: fatty fish such as salmon, nuts and seeds, beans and lentils, whole grains like plain oatmeal, and plant oils such as olive or canola oil instead of butter. NIH NHLBI

     All nutrients & evidence for salmon →
   • MackerelProtects the arteries

     How it helps your blood sugar

     Blood sugar that stays high damages the inner lining of the arteries and causes plaque. Heart-healthy eating helps prevent or delay that plaque. NIH NHLBINIH NHLBINIH NHLBI

     One portion (125 g): 2.1 g saturated fat

     The evidence

     Official Heart-healthy staples

     NIH heart-healthy foods: fatty fish such as salmon, nuts and seeds, beans and lentils, whole grains like plain oatmeal, and plant oils such as olive or canola oil instead of butter. NIH NHLBI

     All nutrients & evidence for mackerel →
   • WalnutsProtects the arteries

     How it helps your blood sugar

     Blood sugar that stays high damages the inner lining of the arteries and causes plaque. Heart-healthy eating helps prevent or delay that plaque. NIH NHLBINIH NHLBINIH NHLBI

     One portion (30 g): 1.4 g fibre · 2 g saturated fat

     The evidence

     Official Heart-healthy staples

     NIH heart-healthy foods: fatty fish such as salmon, nuts and seeds, beans and lentils, whole grains like plain oatmeal, and plant oils such as olive or canola oil instead of butter. NIH NHLBI

     All nutrients & evidence for walnuts →
   • Olive oilProtects the arteries

     How it helps your blood sugar

     Blood sugar that stays high damages the inner lining of the arteries and causes plaque. Heart-healthy eating helps prevent or delay that plaque. NIH NHLBINIH NHLBINIH NHLBI

     One portion (10 g): 1.2 g saturated fat

     The evidence

     Official Heart-healthy staples

     NIH heart-healthy foods: fatty fish such as salmon, nuts and seeds, beans and lentils, whole grains like plain oatmeal, and plant oils such as olive or canola oil instead of butter. NIH NHLBI

     All nutrients & evidence for olive oil →
   • Kidney beans, canned, drainedProtects the arteries

     How it helps your blood sugar

     Blood sugar that stays high damages the inner lining of the arteries and causes plaque. Heart-healthy eating helps prevent or delay that plaque. NIH NHLBINIH NHLBINIH NHLBI

     One portion (120 g): 13.5 g fibre · 0.06 g saturated fat

     The evidence

     Official Heart-healthy staples

     NIH heart-healthy foods: fatty fish such as salmon, nuts and seeds, beans and lentils, whole grains like plain oatmeal, and plant oils such as olive or canola oil instead of butter. NIH NHLBI

     All nutrients & evidence for kidney beans, canned, drained →
   • Oat flakes (rolled oats)Protects the arteries

     How it helps your blood sugar

     Blood sugar that stays high damages the inner lining of the arteries and causes plaque. Heart-healthy eating helps prevent or delay that plaque. NIH NHLBINIH NHLBINIH NHLBI

     One portion (50 g): 5.5 g fibre · 0.67 g saturated fat

     The evidence

     Official Heart-healthy staples

     NIH heart-healthy foods: fatty fish such as salmon, nuts and seeds, beans and lentils, whole grains like plain oatmeal, and plant oils such as olive or canola oil instead of butter. NIH NHLBI

     All nutrients & evidence for oat flakes (rolled oats) →

   🚫 Cut down on

   • TobaccoOfficial

     Smoking and second-hand smoke damage the arteries. NIH NHLBI

   How this step works · what slows it down · sources

   High blood sugar can damage the inner layers of the arteries and cause plaque build-up. Diabetes is also one of the main causes of chronic kidney disease. NIH NHLBINIH NIDDK

   ✅ Also helps

   • Preventing or managing diabetes also lowers your risk of dementia. CDC

   The advice for this step comes from official health agencies and published research — the badge on each line shows which.

Authorised claims say a nutrient contributes to a normal body function. They do not mean that eating more than you need improves that function, or that a food treats any condition. Population studies show associations, not proof of cause.