First of all for the weight lose shows, if someone wants to lose weight I'm cool with that. I'll even help them do it. I don't mind at all. If you aren't comfortable in your own skin, things are just no fun.
Additionally, I think that from a business standpoint it makes a great deal of sense to cash in on this while you can. Considering that this country (the USA) is the fattest country in the world and we are extremely conscious about it. Use fat-phobia to generate profit for you and your sponsor, which are drug and supplement companies, gym chains, perhaps chefs and their restraunts. Also it generates willing volunteers and creates it's own circle of profit. Sit-down in front of the tube and watch fat people work out and all that. You'll either be inspired to work out (most likely the thinner viewers), or you'll be more likely to eat and watch what's going on and enjoy the show, while getting all the fatter.
However, for those of us who are comfortable in our own skin, they should back the hell up. Like BoldBeauty said there is no need for the fat shaming and whatnot that takes place on some of these shows. Why do it there? Don't fat people and FAs get ridiculed enough as it is? It especially grinds my gears when beauties like Kat Dennings, Christina Hendricks, Adele and Elizabeth Taylor are called "fat." That's just stupid society mumbo jumbo crap there. Just because your flat as a board or giant rockhard muscle mountain of a body is getting you less attention than a woman or man with curves who actually enjoys eating you wish hurt upon them?

Come my then and I'll show you why I'm The Demolition Man.

Let people be how they want to be. So they have some curves and fat...ummm...you're supposed to. Countless models die because of having no body fat, and believe it or not it's why the Great Bruce Lee died in my opinion. And he was probably more fit than half the goobs telling people to lose weight.
Well there's my piece. Have a good day all. I have to get to class.
The Demolition Man