Why the Cutoff is 23, Not 25
For decades, the global BMI standard for "Overweight" was 25.0. However, doctors noticed a disturbing trend: many Asian patients with a "Healthy" BMI of 23 or 24 were developing high blood pressure and Type 2 Diabetes at rates normally seen in obese Caucasian patients.
The "Visceral Fat" Factor
The culprit is Visceral Fat. Asian medical studies reveal that Asian bodies tend to store excess calories as fat around the organs (liver, pancreas, intestines) rather than under the skin. This "hidden" fat is metabolically dangerous, triggering insulin resistance even at low body weights.
Regional Specifics
Singapore & India (Strict)
The Health Promotion Board (HPB) and Indian medical bodies are the strictest.
- Overweight Start:BMI 23.0
- Obesity Start:BMI 27.5
Japan & China
Japan defines "Obesity" much earlier than the West to prevent metabolic syndrome.
- China Overweight:BMI 24.0
- Japan Obesity:BMI 25.0
Frequently Asked Questions
Does this apply to Asian-Americans?
Why is the healthy range narrower (18.5-22.9)?
What if I am half-Asian?
Is this calculator accurate for muscle builders?
What health risks start at BMI 23?
Tools & Data Verified by the EverydayCalculators Medical Research Team.
Last updated: January 2026.