... the fact that the obese are often geographically concentrated in areas (like the American South) where public education is shit and poverty is high.
"American obesity rates are the highest in the world with 64% of adults being overweight or obese"
http://en.wikipedia.org/wiki/Obesity_in_the_United_States
This place just isn't big enough for all of us. We've got to find a way off this planet.