Centers for Disease Control and Prevention

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Training Module: Using the BMI-for-Age Growth Charts

What is BMI?
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Example: How BMI Changes with Age for Boys
Example chart


Because adiposity varies with age during childhood and adolescence, BMI is age-specific. As illustrated on this growth chart for boys, in a growth pattern established along the 95th percentile, BMI-for-age reached a minimum at 4 years of age and then increased with increasing age.