Not only do I not know what to believe, but my food choices are limited due to ongoing illness, and it is hard to eat the "right" things. On top of that, my relationship with food is completely warped by not being able to eat for months, and then having compulsive eating as a med side effect for a year.
So what do I do? I have made the decision to work hard, and try to get back to my pre-illness size and shape. I regularly lift weights, I work out, and insofar as is possible, I try to eat sanely (though not during the blogathon, because some things are just too hard -- I can't think clearly enough to change my clothes, let alone my food choices, at this point). And I am finally at a point where I am doing it for me, not for society, for a doctor, for a partner or friend. And society, frankly, can go and get fucked.
This approach will get me so far, you know, and it is something I can live with. But, dammit, I am scared. One day I want to have kids, and how in the hell I am going to give them sane body image messages, I don't know. I hope by then society is ready to help me out, some organisations at least seem to be starting now.