|
Body mass index (BMI)
|
|
Charts and calculators
- For adults, the accepted formula for calculating adult (20 years and older) BMI is:
- English: BMI=703 x [Weight in pounds/(Height in inches)2]
- Metric: BMI= [Weight in kilograms/(Height in meters)2]
- Note: 2.2 lb=1kg
- Body Surface Area = 0.20247 x Height(m)0.725 x Weight(kg)0.425
- The formula for adult BMI can be used with children, although the results are interpreted differently. BMI charts showing percentiles are used with children 2-20 years of age. Related growth charts include head circumference-for-age (infants 0-36 months), weight-for-length percentiles (infants 0-36 months), stature-for-age (2-20 years) and weight-for-age (2-20 years).
- Although there is general consensus that BMI for adults is associated with increased disease risk, there are differences in BMI for men and women, and older and younger adults. The graphs below show that older children's (boys) BMI increases up to age 20, (and keeps on increasing after that). This data came from the standard CDC growth charts. There is a gap between the children and adult data, because the data sources are different. The adult data (from the NHANES III survey) comes from data collected between 1988 and 1994, whereas the CDC body-mass-index-for-age charts are derived from a mix of data from new and older sources. A similar chart is provided for the women. The statement that over 50% of Americans are overweight relies on these graphs: the 50th percentile of men have a BMI of 25 or above, which is considered overweight according to most CDC charts. Similarly, 50% of American women over 30 also have a BMI that is considered overweight and at risk.
|
|
 |
|
Cdc charts
|
Copyright © 2011 Natural Standard (www.naturalstandard.com)
|
The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.
| |
