nah. "what's wrong with our culture" isn't hard to figure out -- sedentary lifestyles, car centric culture that preempts biking, walking and activity, and lots of cheap, fatty foods. we're seeing that happen in other countries, too; the US just got there first.
rates of diabetes and obesity are getting pretty high in other countries, too. the UK is pretty fat, and much of Europe is heading that direction. behind the US, but it's trending that way.
The middle east is fat as fuck, but is mitigated by overall poverty and high temperatures -- life in a sauna helps drop weight.
China has seen a surge diabetes, as has several other Asian countries.