I was also triggered by the comparison to height. Because the dutch are among the top 5 talles people walking the face of the earth, but the obesity percentage of the dutch is way lower than the american number.
So how come ? IMO the difference is environmental: food is plentiful in both locations, but the european food is different from the US food, the european portion sizes are different, and europe is less car centred (medieval road plans).
So I do not think obesity is the way evolution intended us to be.
10 week challenge - 7 WO per week - ended