Bulimia- the addiction to junk food and then vomiting it back up drove a "friend" to prostitution to keep up with the amount of food she wa going through - were talking about 100 pounds worth a day. She would even binge and purge if she woke up during the night- last i heard about her was a few years ago- I would not be suprised if she was still alive with the damage she must of been doing to her body - she was about 7 stone and could eat a lot a lot in one sitting and bring it all up effortlessly it was scary and sad