Number: 369 anorexia nervosa bulimia <desc> Description: What are the causes and treatments of anorexia nervosa and bulimia? <narr> Narrative: A relevant document will describe the causes of the eating disorders, anorexia nervosa or bulimia. Documents that describe symptoms including the taking of laxatives, self-induced vomiting and excessive exercise are relevant. Discussions of the treatment of the disorders are also relevant.