BMI (kg/m2)

Classification

Risk of obesity co-morbidity

18.5 - 24.9

25.0 - 29.9

>30.0

30.0 - 34.9

35.0 - 39.9

>40.0

Reference range

Overweight

Obese

Class 1

Class 2

Class 3

Negligible

Mildly increased

Moderate

Severe

Very severe