I think my friend is anorexic and possibly bulimic, how can I help her?

talk to her, and tell her the facts! I used to be like that, but I stopped when I found out that it actually makes it HARDER to become skinny when you skip meals. food = energy, and if your friend doesn't stop her habit of not eating and over-exercising, she can easily wind up with serious health problems in the future. get an adult you trust and immediately tell them about it! (: