What Is a Healthy BMI for Indians? Why the Cut-offs Are Lower

Body Mass Index (BMI) is the most widely used quick check of whether your weight is healthy for your height. But there is something many people in India don’t know: the BMI categories used around the world were based mostly on data from Western populations — and for South Asians, health risks start at a lower BMI.

The standard BMI categories

The World Health Organization’s familiar categories for adults are:

You calculate BMI by dividing weight in kilograms by height in metres squared. A person who is 1.70 m tall and weighs 68 kg has a BMI of 68 ÷ (1.70 × 1.70) = 23.5.

The Indian cut-offs

In 2004 a WHO expert consultation noted that many Asian populations face higher risk of type 2 diabetes and heart disease at BMIs below 25. Building on this, Indian consensus guidelines published in 2009 recommended lower cut-offs for Indian adults:

So the 1.70 m, 68 kg person above — “normal” by global standards — is classed as overweight under the Indian guidelines.

Why are the cut-offs different?

Research has repeatedly found that, compared with people of European origin at the same BMI, South Asians tend to have:

• A higher percentage of body fat and lower muscle mass.
• More fat around the abdomen and internal organs (visceral fat), which is closely linked to insulin resistance.
• Earlier onset of type 2 diabetes, high blood pressure and abnormal cholesterol.

This pattern is sometimes described as the “thin-fat” phenotype: a person can look slim, have an ordinary BMI, and still carry metabolically risky fat around the middle.

Check your waist, not just your BMI

Because abdominal fat matters so much, waist circumference is an excellent second measurement. For Indian adults, commonly used risk thresholds are:

• Men: 90 cm (about 35.5 inches) or more
• Women: 80 cm (about 31.5 inches) or more

Measure around your bare waist, just above the hip bones, after breathing out normally. If your BMI is in range but your waist is above these numbers, it is still worth discussing with your doctor.

Where BMI falls short

BMI is useful because it is quick and needs no equipment, but it has limits:

• Muscle weighs more than fat. Athletes and people who do strength training can have a high BMI while being very fit.
• It ignores fat distribution. Two people with the same BMI can have very different waist sizes and risks.
• Age changes body composition. Older adults lose muscle, so a “normal” BMI can hide higher body fat.
• It doesn’t apply to children or pregnant women.

For a fuller picture, you can estimate body fat percentage with a tape measure using our body fat calculator, alongside BMI and waist size.

Practical steps if your BMI is above the Indian cut-off

1. Don’t panic, and don’t crash diet. Losing even 5–7% of body weight can meaningfully improve blood sugar and blood pressure.
2. Move daily. Aim for at least 150 minutes a week of brisk walking or similar activity, plus some strength training.
3. Watch refined carbs and sugary drinks, which are common in Indian diets, and add more vegetables, pulses and protein.
4. Get screened. Ask your doctor about fasting blood sugar or HbA1c, blood pressure and a lipid profile — especially if diabetes runs in your family.

Calculate yours

Use our BMI calculator to find your number in seconds, then compare it with both the global and the Indian categories above. Treat it as a starting point for a conversation with your doctor, not a final verdict.

Written by the Toolsopedia team. Spotted an error? Tell us and we’ll fix it.