> -I have heard that h/g's for example measured about 5-10%
>bodyfat (men, I assume) pretty consistently.

I have seen a movie about australian aborigens taken at the end of 19
century or beginning of the 20 , they were all very slim looking , after you
saw them later in the middle of  20 century , then more recently,  what a
difference lot of obesity.
something changed!
jean-claude