It's important to have a good support system for your daughter, including a nutritionist, family doctor/naturopathic doctor, and a therapist who has experience helping clients with eating disorders. Anorexia is essentially self-starvation, while Bulimia is binge eating followed by self-induced vomiting or laxative use. Scientists are now proving that malnutrition can play a large part of the development of these conditions. Several nutrients including zinc, essential fatty acids, B6 and tryptophan deficiency have been linked to eating disorders. Although supplementation might improve appetite control, changing the diet and providing education about health and wellness is vital for long term success. As your daughter's nutrition improves, her anxiety and compulsions regarding food will decrease and she will likely be more open to making positive dietary changes.