Bananas, this is a terrible place to be, I have been there many of times. The only thing that makes me feel better about myself is to exercise, it's the only time that I feel that I'm doing something good for myself. It releases endorphins and good stuff like that (a natural high).

If you are making yourself sick you need to seek help or at the very least stop! You're right it doesn't help, it slows you metabolism down, and does a lot of damage to your body.