Body Mass Index (BMI): Age Trend
Page updated: Evidence reviewed: What this means
Median BMI rises from 27.0 to 29.0 kg/m² for US men and from 25.5 to 30.0 kg/m² for US women between the 20s and 50s, then generally declines in older groups.
Body Mass Index (BMI) Body Composition Trend
BMI body mass index weight height obesity overweight underweight trend aging norms normative data normative values reference values percentiles benchmarks reference ranges standards Body Mass Index (BMI) by Age Chart (kg/m²)
Body Mass Index (BMI) Median Values
| Age | Male (kg/m²) | Female (kg/m²) |
|---|---|---|
| 20-29 | 27.0 | 25.5 |
| 30-39 | 27.8 | 28.6 |
| 40-49 | 28.9 | 28.5 |
| 50-59 | 29.0 | 30.0 |
| 60-69 | 28.3 | 28.8 |
| 70-79 | 28.8 | 28.0 |
| 80+ | 27.2 | 26.9 |