because they are fed more processed food.
IMO wheat and GMO corn, soy and canola are the biggest factor in obesity.
Heck, most people in this country are fatter than they were a few years ago, including me, and it is not because of more money or frequenting fancy restaurants.
Maybe radiation levels are higher than they should be and are hurting people's thyroids? Maybe some huge ag congolmerates have engineered grain to fatten cattle and it is our food too?