Comments about body mass index elderly cutoffs
This article has an impressive sample size of elderly women, age 60 to 88 years. Their data graphed looks like this, showing body fat percentage versus Body Mass Index.
A couple of points about this graph. They used a linear trend line, but a curving line would have been a little better.
I’ve compared this data (above) of average 67-year old women, compared to the Heritage Family study1 data of American women, average age 34. I’ve superimposed the current elderly data (red) over the Heritage Family study data ( light grey circles).
It is not unexpected that the (red) elderly women would have a higher body fat percentage, by about 5%, compared to younger adult women.
- Jackson AS, Stanforth PR, Gagnon J, et al. The effect of sex, age and race on estimating percentage body fat from body mass index: the Heritage Family Study. Int J Obes Relat Metab Disord, Jun 2002;26(6):789-96
- The Pubmed link to the Heritage family study.
You should also see this one: As you get older, higher BMI is healthier.