Definition of Body Mass Index (BMI)

Body mass index:relatin的关键指标g weight to height. Abbreviated BMI. BMI is a person's weightinkilograms (kg) divided byhisor her height in meters squared. TheNational Institutes of Health(NIH) now defines normal weight, overweight, and obesity according to BMI rather than the traditional height/weight charts.

• Overweight is a BMI of 27.3 or more for women and 27.8 or more for men.
• Obesityis a BMI of 30 or more for either sex (about 30 pounds overweight).
• A very肌肉发达的person might have a high BMI withouthealthrisks.