Body Mass Index for Children

The height and weight of a child is monitored to determine if the child is developing properly. Average growth charts were designed to help doctors know if a child was growing at the normal rate as other children her age. Pediatricians are now using BMI (body mass index) to help follow the healthy weight limits of a growing child.

Significance

• Body mass index compares the height and weight to determine body fat. This allows parents and physicians to know whether the child is overweight. The calculation to determine BMI is: The weight of the child divided by the height squared and the sum multiplied by 703, a conversion factor. (There is a BMI calculator listed in the resource section.)

Time Frame

• BMI is measured several times over a set period of time. This allows the doctor to know whether the child is gaining or losing weight in a healthy manner.

Misconceptions

• Body mass index is not the same for everyone. Gender and age are calculated into the BMI to ensure the child is developing at a normal rate for others like him.

Considerations

• Studies are showing that children with a high BMI are more susceptible to being overweight as adults. Monitoring body mass index helps parents and doctors keep children in a healthy weight range.

Size

• Bone structure and size can play an important role in determining the body mass index for children. Kids who are tall and have a large frame may be classified as overweight when they are actually very healthy or even too skinny. A child who is short and has a small bone structure and a normal BMI might be considered overweight.

Benefits

• The body mass index for children should be used to show a trend in development. Monitoring the BMI will show significant weight gains or losses, which could indicate health issues. Although this is common among children going through puberty, following the trends can show whether it is something to be concerned with.