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Unhealthy Weight in Children

Body mass index (BMI), which measures weight in relation to height, is used to identify a possible weight problem for a child. A child with a BMI in the 86th to 94th percentile on a growth chart is usually considered overweight. A child who has a BMI below the 5th percentile may be considered underweight. Children grow at a different rates. Your doctor can tell you if your child's weight is a concern.

In some cases, a child may be overweight because he or she has a large amount of body fat (adipose tissue). But not all children with BMIs in the 86th to 94th percentile have too much body fat. For instance:

  • A child who has grown consistently at a higher percentile for most of his or her life may just be bigger than other children of the same age due to genetics.
  • Before and during puberty, it is normal for children to have a significant gain in weight before beginning to grow in height. This can temporarily increase a child's BMI.
  • Children who are very muscular (for instance, children who are very active in sports) may have a higher BMI but have normal or even low amounts of body fat.

Current as of: October 24, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

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