From the Huffington Post: Obesity On The Rise: Whose Waistlines Are Growing In The U.S.? ("all adult Americans")

http://www.huffingtonpost.com/2012/10/24/obesity-rates-increase-americans_n_2011021.html

Obesity On The Rise: Whose Waistlines Are Growing In The U.S.?

"Bad news: Obesity is on the rise for nearly all adult Americans.

According to a recent poll, published by Gallup on Oct. 24, obesity rates have climbed in virtually all age groups over the past four years."