What is the BMI and what is it used for?

BMI is a screening measure only. It is used to identify those individuals at risk for overweight and obesity and identify the need for further evaluation. BMI is based on age and gender and is a population based reference.

  • BMI<5% is considered underweight
  • BMI between 5%–84% is considered normal weight
  • BMI >85%–94% is considered overweight (IOM classification)
  • BMI 95%–99% is considered obese (IOM classification)
  • BMI >99%  is considered morbidly (severely) obese