Table 3.

Definitions of obesity and risk of comorbidity according to obesity and abdominal obesity in Koreans

Classification	Risk of comorbidity according to abdominal obesity
	< 90 cm (men), < 85 cm (women)	≥ 90 cm (men), ≥ 85 cm (women)
BMI (kg/m2)
Underweight ( < 18.5)	Low	Average
Normal (18.5–22.9)	Average	Increased
Pre-obesity (23.0–24.9)	Increased	High
Class I obesity (25.0–29.9)	High	Severe
Class II obesity (30.0–34.9)	Severe	Very severe
Class III obesity ( ≥ 35.0)	Very severe	Very severe

Pre-obesity may be defined as overweight or at-risk weight, and class III obesity may be defined as extreme obesity.

BMI, body mass index.