Health Calculator · Indian Diabetes Risk Score (IDRS)
Diabetes Risk Calculator India
Assess your diabetes risk using the IDRS, a score developed from Indian population research. See how Indian waist cutoffs differ from WHO standards and why that matters for your result.
Why the IDRS Matters for Indians
India has an estimated 101 million people living with diabetes. Indians often develop the disease at younger ages and at lower BMI or waist sizes than Western populations. The IDRS was developed from Indian population research and uses Indian waist cutoffs — not only the broader WHO thresholds that can miss earlier risk in Indian bodies.
Enter Your Details
IDRS Score
out of 80 points
Your score breakdown:
Understanding the Indian Diabetes Risk Score (IDRS)
The IDRS was developed by Dr V. Mohan from the Chennai Urban Rural Epidemiology Study (CURES) and later evaluated in Indian populations. It scores four validated risk factors: age, waist circumference, physical activity, and family history of diabetes. Each factor carries 10–30 points based on its risk contribution.
Score interpretation: Under 30 = Low risk · 30–50 = Moderate risk · Over 50 = High risk. High risk does not mean you have diabetes — it means a doctor visit and an HbA1c test are warranted.
The IDRS is used as a first-line screening tool across India because it requires no blood test — just four easily answerable questions. In the original study it identified about 72% of undiagnosed diabetes cases at the chosen cutoff, and it is more relevant for Indian populations than many Western screening tools such as the ADA risk calculator.
Why Indian Waist Cutoffs Are Lower Than WHO Standards
The WHO uses ≥ 94 cm for men and ≥ 80 cm for women to define abdominal obesity. The Indian IDRS uses ≥ 90 cm for men and ≥ 80 cm for women as the high-risk waist cutoff — 4 cm lower for men. This difference comes from a key finding in Indian metabolic research.
Indians store proportionally more fat around the abdominal organs (visceral fat) at smaller waist sizes compared to Western populations. Visceral fat — not subcutaneous fat — is the primary driver of insulin resistance, inflammation, and diabetes risk. At a waist of 90 cm, an Indian man already carries a metabolic risk comparable to a Western man at 94 cm.
This is why using the WHO 94 cm cutoff for Indian men underestimates risk — it misses Indian men in the 90–93 cm range who are already at elevated risk. The IDRS 90 cm threshold corrects for this.
When to Act on Your Diabetes Risk Score
Risk-based action guide:
- Low risk (under 30): Maintain your current active lifestyle and healthy weight. Reassess every 2–3 years or if waist size increases.
- Moderate risk (30–50): Consider requesting a fasting blood glucose or HbA1c from your family doctor at your next visit. Focus on reducing refined carbs (white rice, maida) and increasing daily walking to 30+ minutes.
- High risk (over 50): A doctor visit is recommended. An HbA1c test (₹200–600 at most labs) will confirm whether you have pre-diabetes or diabetes. If detected early, type 2 diabetes is highly manageable through diet and lifestyle before medication becomes necessary.
Family history of diabetes from both parents is one of the strongest risk factors for Indians. If both parents are diabetic, earlier screening is often reasonable, especially if waist size, inactivity, or weight gain are also present.
Medical Sources
- Mohan V, et al. "A simplified Indian Diabetes Risk Score for screening for undiagnosed diabetic subjects." J Assoc Physicians India. 2005;53:759–763. (Original IDRS derivation from the CURES study)
- Anjana RM, et al. "Metabolic non-communicable disease health report of India: the ICMR INDIAB national cross-sectional study." Lancet Diabetes & Endocrinology. 2023.
- Waist circumference cutoffs: Misra A, et al. Obesity. 2006;14(9):1519–1528.