Table 1: Classification of body weight and obesity based on BMI and waist circumference.

Obesity class BMI (kg/m2) Waist circumference Associated health risk Underweight   <18.5     Normal   18.5–24.9   Average Overweight   25.0–29.9 Men: ≥94 cm Women: ≥80 cm Increased Obesity I 30.0–34.9 Men: <102 cm Women: <88 cm Moderate Moderate obesity II 35.0–39.9   High Severe obesity III ≥40   Very high