BMI or body mass index is the number, derived by using height and weight measurements, that gives a general indication if weight falls within a healthy range. The web link below will give you more information on how BMI is determined in children & teens:
http://www.cdc.gov/nccdphp/dnpa/bmi/childrens_BMI/about_childrens_BMI.htm
Answers come from "Health Connections," the 24-hour call center at Upstate Medical University and University Hospital. Get answers to your health questions from trained professionals 24 hours a day by calling 1-800-464-8668.