Yeah if you look at people in the 25-35 BMI range in a lot of western countries you'll find a fairly similar percentage of the population is fat when compared with America. America just has a lot more of the 500lb hams that really make you think "holy fucking shit, you're as big as THREE humans".  But, when counting a 500lb ham for the census, in the words of Gimli: That still only counts as one!