Check out this great website halls.md, with lots of great charts!
I took two of my favorite BMI charts from the website, scaled them, and lined them up to match:
Check out some interesting points:
- BMI is a little like a mass-to-surface-area ratio, calculated as mass/height2, with units kg/m2.
- For 25y/o's,
* median BMI is ~25 for both men and women,
* but the women have a broader distribution in both directions.
- For 65 y/o's,
* median BMI is ~27 for both men and women,
* lower 10th %tile BMI is ~22 for both men and women.
* but, upper 10th %tile BMI is ~33 for men, and ~37 for women!
There are just as many skinny old men and women, but the overweight old women are often more overweight than the overweight old men. By a lot!