The Glycemic Index (GI) is a powerful tool for managing diabetes. It tells you how quickly a food raises your blood sugar — helping you make smarter choices that keep blood sugar more stable throughout the day.
📊 GI Scale Explained
Low GI ≤ 55
Digests slowly — best choice for diabetics
Medium GI 56–69
Moderate — eat in controlled portions
High GI ≥ 70
Spikes blood sugar — limit or avoid
🟢 Low GI Foods (Best for Diabetics)
- Oats (GI: 55), Barley (GI: 25), Brown rice (GI: 50), Ragi (GI: 68)
- Lentils/dal (GI: 29), Chickpeas (GI: 33), Rajma (GI: 28)
- Most vegetables: spinach, broccoli, cauliflower (GI: <15)
- Guava (GI: 12–24), Apples (GI: 36), Jamun/Indian blackberry
🔴 High GI Foods to Limit
- White rice (GI: 72–87) — switch to brown rice or millets
- White bread (GI: 75) — choose whole wheat or ragi bread
- Sugary drinks, sodas (GI: 63–90+)
- Maida-based items: samosa, puri, naan
- Puffed rice, popcorn, cornflakes
💡 Practical Tips to Lower Your Meal's GI
- Add protein (dal, egg, paneer) to every meal — it lowers GI response
- Include healthy fat (nuts, olive oil) to slow glucose absorption
- Add lemon juice or vinegar to food — acid lowers GI
- Eat vegetables first, carbs last in a meal
- Cook pasta and rice al dente (slightly firm) — lower GI than overcooked
- Let cooked rice cool before eating — increases resistant starch (lower GI)
Dr. Pavithra's Practical Tip
You don't need to memorize GI numbers. The simple rule: choose whole over refined, limit white rice and white bread, eat plenty of vegetables and legumes, and include protein and healthy fat at every meal. These habits naturally lower your overall glycemic response.
Dr. Pavithra Thamizharasan
MBBS, MD, PG Diploma in Diabetes (Royal College of Physicians, UK) | Diabetes Specialist, Chennai
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