Question

what is body mass index how it is calculated

Answer 1

BMI is a person's weight in kilograms (kg) divided by his or her height in meters squared. The National Institutes of Health (NIH) now definesnormal weight, overweight, and obesity according to BMI rather than the traditional height/weight charts. 

Answer 2

BMI is a person's weight in kilograms (kg) divided by his or her height in meters squared. The National Institutes of Health (NIH) now defines normal weight, overweight, and obesity according to BMI rather than the traditional height/weight charts.