BMI = weight (kg) / height (m)². BMI classification cut-offs are region-dependent. China uses 24 and 28 for overweight / obese; WHO Asia-Pacific uses 23 and 28; WHO International uses 25 and 30. These stricter cut-offs for Asian populations reflect evidence that visceral fat and metabolic-disease risk begin at lower BMI levels in East Asia. Source: Wikipedia — Body mass index