Classification of overweight and obesity by BMI, waist circumference, and associated disease risk
BMI (kg/m2) | Obesity class | Disease risk* | |||
---|---|---|---|---|---|
WC: men ≤40 inches; women ≤35 inches | WC: men ≥40 inches; women ≥35 inches | ||||
Underweight | <18.5 | ||||
Normal | 18.5–24.9 | ||||
Overweight | 25.0–29.9 | Increased | High | ||
Obesity | 30.0–34.9 | I | High | Very high | |
35.0–39.9 | II | Very high | Very high | ||
Extreme obesity | ≥40 | III | Extremely high | Extremely high |