7 High Glycemic Foods Diabetics Should Avoid

NDTV

30-04-2025

Managing diabetes effectively requires more than just medication, it hinges heavily on dietary choices. One of the most important factors in diabetic nutrition is the glycemic index (GI) of foods. The World Health Organisation (WHO) and the American Diabetes Association (ADA) both highlight the importance of avoiding high-GI foods, as they can cause rapid spikes in blood glucose levels. These foods are quickly broken down into sugar, which makes them risky for people with type 2 or type 1 diabetes. Being aware of high-GI foods and replacing them with healthier alternatives is key to keeping blood sugar levels stable and avoiding complications.
Why glycemic index matters in diabetes
The glycemic index ranks carbohydrates from 0 to 100 based on how fast they raise blood sugar. High-GI foods (above 70) cause sharp increases in glucose, leading to insulin spikes. Over time, this can worsen insulin resistance and increase the risk of complications. Monitoring GI can help diabetics maintain stable sugar levels and support long-term metabolic health. Here are mentioned 7 high glycemic foods diabetics should avoid.
1. White bread
Made from refined flour, white bread has a GI of around 75. It lacks fibre and nutrients, leading to a fast release of sugar into the bloodstream. Opt for wholegrain or multigrain bread instead.
2. Sugary breakfast cereals
Cornflakes and puffed rice cereals may seem convenient, but they are among the highest GI foods (GI 80+). Choose high-fibre oats or unsweetened muesli to prevent sugar spikes after breakfast.
3. White rice
Polished white rice, especially when overcooked, has a GI above 70. It can significantly raise post-meal glucose levels. Brown rice, quinoa, or millets like bajra or jowar are much healthier alternatives for Indian diets.
4. Potatoes (especially mashed or baked)
Potatoes have a naturally high starch content. Mashed potatoes, with a GI of 85 or more, are especially problematic. Sweet potatoes or boiled potatoes in moderation with fibre-rich meals may be safer.
5. Soft drinks and packaged fruit juices
These are loaded with added sugars and lack fibre, causing an immediate sugar surge. Their GI is often above 75. Diabetics should stick to water, unsweetened herbal teas, or diluted fresh lemon water.
6. White pasta
Refined pasta is quickly digested and converted into glucose. It ranks high on the GI scale unless paired with fibre and protein. Whole wheat pasta or zucchini noodles offer better glycemic control.
7. Watermelon
While nutritious, watermelon has a GI of 76. Though its glycemic load is moderate due to high water content, large servings can still cause a sugar spike. Limit portion size and balance with protein.
Tips to manage high GI food cravings
Replacing these items with low-GI, nutrient-rich alternatives is a simple yet powerful step toward better health and a more balanced lifestyle.
1. Combine high GI items with protein or fibre to slow glucose absorption.
2. Avoid cooking starchy foods for too long, as this increases their GI.
3. Use the 'plate method': half veggies, one-quarter protein, and one-quarter whole grain.
4. Keep a food diary to track reactions to specific foods.
Understanding and managing the glycemic index of your diet is crucial for diabetes care. By avoiding or limiting these high-GI foods, diabetics can maintain more consistent blood sugar levels and reduce the risk of long-term complications.
Disclaimer: This content including advice provides generic information only. It is in no way a substitute for a qualified medical opinion. Always consult a specialist or your own doctor for more information. NDTV does not claim responsibility for this information.