Table 1.

Categories of BMI and disease risk relative to normal weight and WC

	BMI	Obesity class	Disease risk (relative to normal weight and WC)
			men <102 cm/ women <88 cm	men >102 cm/ women >88 cm
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	>40.0	III	extremely high	extremely high

Source: NHLBI Obesity Education Initiative, 2000.