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What is body mass index (BMI)?

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Body mass index, or BMI, is a calculation based on your height and weight to place you in one of four categories: underweight, at a healthy weight, overweight, or obese. BMI gives an idea of your potential health risks based on your weight.

Reviewed by Laura J. Martin on June 26, 2016
Reviewed by Laura J. Martin on June 26, 2016

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