>>40816652
1. The transportation infrastructure is all car based without much public transit, so people walk much less.
2. The meal portions at restaurants are very large.
3. The government subsidizes corn production which is used to produce high fructose corn syrup as a cheap sweetener which is supposed to be worse for your health than standard cane/beet sugar.
4. Schools allow unhealthy kids to opt out of hard physical activity during gym class
5. If you're obese as a child or your parents have bad eating/lifestyle habits you're all but doomed to be obese also
