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. 2001 Mar 24;322(7288):716–720. doi: 10.1136/bmj.322.7288.716

Table.

Classification of obesity based on body mass index (BMI)2 3

Classification BMI*
Underweight <18.5
Normal range 18.5-24.9
Overweight: ⩾25.0
 Pre-obese 25.0-29.9
 Obese class I 30.0-34.9
 Obese class II 35.0-39.9
 Obese class III ⩾40.0
*

kg/m2