I had obsessive compulsive eating disorder for a couple of years when I was really depressed. It ruined my life - all I could think about was food and how disgusting I was. I'm not really sure what reduced its effects - I'm much much better now. I get the occasional binge session, but opposed to every day, I'm near sorted.
I know my disorder wasn't necessarily to try and get thin - it was to try and make myself feel better, which had the adverse effect of making me extremely overweight and therefore more depressive, which lead to binges etc.
I think as I have gotten older, the habits have slipped, I've met guys who liked me as a person and therefore I think subconsciously I stopped myself.
I do know how hard these disorders are and I don't think you ever recover properly