BMI a valuable tool to identify health trends in children

You may hear the term body mass index or "BMI" during your child's checkups. It’s a tool doctors use to track a child’s weight in relation to their height starting at age two. Maintaining a healthy weight as kids grow and develop is important to their overall health and well-being.

While adults can be assigned numbers correlating to a BMI scale, for children a BMI is expressed as a percentile.