Like all teenagers, Kesha wanted to fit in and look attractive to boys. She had tried to diet, but every diet failed. She was angry at herself for not dieting, so she ate everything in sight. Then she'd go to the bathroom and vomit. Kesha hid food in her room and would eat it at night when the family had gone to bed. She always vomited afterward. She also took laxatives regularly. What disorder does Kesha suffer from?​