Obesity Classification

Extended International (IOTF) Body Mass Index Cut-Offs for Thinness, Overweight and Obesity in Children

The revised international child cut-offs are available corresponding to the following body mass index (BMI) cut-offs at 18 years:

  • 16       thinness grade 3
  • 17       thinness grade
  • 18.5    thinness grade 1
  • 23       overweight (unofficial Asian cut-off)
  • 25       overweight
  • 27       obesity (unofficial Asian cut-off)
  • 30       obesity
  • 35       morbid obesity

The cut-offs are given for exact ages by month from 2 to 18 years.

Prevention of obesity

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Prevention of obesity