Eating disorders are real, treatable medical illnesses. They are often characterized by disturbances in eating behavior, such as drastic reduction of food intake or extreme overeating, as well as feelings of distress or extreme concern about body shape or weight. The two main types of eating disorders are anorexia nervosa and bulimia nervosa. A third type, binge-eating disorder, is pending approval as a formal psychiatric diagnosis. Eating disorders frequently develop during adolescence or early adulthood, and they occur more often in females than in males. Studies have shown cognitive behavioral therapy (CBT) to be the most effective approach to treating eating disorders. However, the applicability of these findings to clinical settings and intensive outpatient therapy programs (IOPs) remains unknown. This study will evaluate the effectiveness of a new approach to a normalization of eating (NOE) program, based on principles of CBT, in treating women with anorexia nervosa or bulimia nervosa.