Glycaemic index for Indian foods, and why GI alone misleads

GI tables are everywhere and they are useful, but on their own they produce some genuinely wrong conclusions, like avoiding watermelon while eating biscuits.

Here is a GI reference for Indian food, and then the part that matters more: why GI alone misleads, and what actually determines how a meal affects your glucose.

This is information, not medical advice. If you take medication for blood sugar, discuss dietary changes with your doctor, particularly before adding herbs that may add to its effect.

What GI measures, and what it misses

Glycaemic index ranks carbohydrate foods by how quickly they raise blood glucose, compared against a reference, with the comparison standardised to a fixed amount of carbohydrate.

That last clause is the catch. GI is measured on a fixed carbohydrate quantity, not a realistic portion.

Watermelon is the classic example. Its GI is high, but watermelon is mostly water, you would have to eat a very large quantity to consume the amount of carbohydrate the GI test uses. In a normal portion, its actual effect is small.

This is why glycaemic load is the more useful idea: it accounts for both the GI and the realistic portion size. A high-GI food in a small portion can affect you less than a moderate-GI food in a large one.

Practical takeaway: portion matters at least as much as GI. Do not avoid a food because of its GI number while eating a large serving of something “safer”.

GI reference for Indian foods

Approximate values. GI varies with variety, ripeness, processing and cooking, so treat these as a guide rather than precise figures.

Grains and staples

Food	Approx. GI
Barley (jau)	Low
Whole wheat roti	Low–moderate
Bajra, jowar, ragi	Low–moderate
Steel-cut oats	Low–moderate
Brown rice	Moderate
Basmati rice	Moderate
Regular white rice	Moderate–high
Poha	Moderate–high
Idli, dosa (fermented)	Moderate
White bread, maida	High
Instant noodles	High
Sooji, rava	Moderate–high

Worth noting: basmati generally sits lower than regular white rice, and fermentation in idli and dosa moderates the response relative to the raw ingredients.

Pulses and legumes, all low

Rajma, chana, chhole, toor dal, moong dal, masoor dal, lobia, soya.

Low GI, high fibre, and a protein source. This is the single most useful category on this list and it needs no restriction.

Vegetables

Low: all leafy greens, lauki, tori, bhindi, cabbage, cauliflower, brinjal, capsicum, beans, cucumber, tomato.

Moderate: carrot, peas, sweet corn.

Moderate–high: potato, particularly boiled and mashed. Sweet potato is lower than regular potato.

Note on potato: cooking and cooling it, as in a potato salad or leftover aloo, increases resistant starch and lowers the response somewhat. A small, genuinely useful detail.

Fruit

Low–moderate: apple, pear, guava, orange, sweet lime, berries, papaya, peach, plum.

Moderate: banana (ripeness matters, less ripe is lower), mango, grapes, chikoo.

High GI but low load in normal portions: watermelon, muskmelon.

Rule that covers all of it: eat whole fruit, not juice. Juicing removes the fibre and the glucose arrives fast. A customer avoiding mango while drinking packaged juice has it backwards.

Dairy and protein

Milk, dahi, paneer, eggs, chicken, fish, nuts and seeds are all low or negligible in GI terms. Protein and fat slow the whole meal’s response.

Sugars

Glucose, honey, jaggery and white sugar are all high. Gur and shakkar are not meaningfully better than sugar for glucose purposes, a widely held belief with little to support it.

The three things that change the response more than GI

This is the genuinely useful section.

1. What else is on the plate

GI is measured on a food eaten alone. Nobody eats rice alone.

Add dal, sabzi, dahi and salad, and the same rice produces a meaningfully different response, protein, fat and fibre all slow gastric emptying and glucose absorption.

A balanced Indian thali is already a reasonably well-designed meal. The problem is usually a plate that is mostly rice or mostly roti with a token amount of everything else.

2. The order you eat it in

Eating vegetables and protein before the carbohydrate measurably reduces the post-meal glucose spike compared with the same meal eaten in reverse.

Salad first, then dal and sabzi, then roti or rice. Free, requires no change to what you cook, and almost nobody does it.

3. What you do afterwards

A ten to fifteen minute walk after a meal reduces the post-meal rise. This is one of the highest-return habits available and it costs nothing.

Practical substitutions that are actually realistic

Instead of	Try
White bread toast	Besan chilla, egg, or oats
Biscuits with chai	Roasted chana, nuts, or a fruit
Large bowl of rice alone	Smaller rice + more dal + sabzi + dahi
Packaged juice	Whole fruit
Instant noodles	Vegetable upma or poha with peanuts
Plain poha	Poha with peanuts and vegetables
Sooji halwa daily	Occasional

Notice none of these eliminates a staple. Elimination diets fail; adjustments persist.

Where supplements sit

We manufacture in this category, so the declaration is made.

Fibre before a meal, isabgol, flaxseed, methi, moderates the glucose response and increases satiety. A real, modest, explicable mechanism.

Traditional herbs, karela, jamun seed, methi, gudmar, have long traditional use in India in this context. Methi also supplies fibre.

What no product can claim: to treat, control or prevent diabetes. Those are medicinal claims and we decline artwork that makes them.

One real safety point: several of these herbs may add to the effect of glucose-lowering medication, which can mean hypoglycaemia. If you take such medication, tell your doctor before adding them.

A note on “sugar-free” products

Worth a line because the category is large.

Sugar-free biscuits and sweets frequently still contain refined flour, which produces its own glucose response. “Sugar-free” refers to added sugar, not to the carbohydrate content of the product.

Read the total carbohydrate figure, not just the sugar claim on the front.

The short version

GI is useful and incomplete, portion size, what else is on the plate, the order you eat in, and a walk afterwards all matter more. Pulses are the most useful low-GI category and need no restriction. Whole fruit, not juice. Gur is not better than sugar. And a balanced thali eaten in the right order is already a reasonable meal.

More detail in Hindi: शुगर में क्या खाना चाहिए और क्या नहीं. If your result is borderline: pre-diabetes, what the number means.