Why do Americans praise fat people that lose weight?

[Nirvana_Nut85]

It's a question within itself. Why do we praise fat people who loose weight? why do people watch reality tv shows about about housewives, teenagers who are pregant/mothers? or shows about like Jersey Shore? This may just explain it!

http://www.globalpost.com/dispatch/news/science/130524/western-iqs-drop-14-points-last-century-study-says-2