The Importance of Physiologic, Metabolic, and Endocrine Studies for the Understanding of Anorexia Nervosa.- Nutritional Control of Central Neurotransmitters.- Impaired Control of Appetite for Carbohydrates in Some Patients with Eating Disorders: Treatment with Pharmacologic Agents.- Animal Models: Anorexia Yes, Nervosa No.- Noradrenergic Function in the Medial Hypothalamus: Potential Relation to Anorexia Nervosa and Bulimia.- Effect of Starvation on Central Neurotransmitter Systems and on Endocrine Regulation.- Neurotransmitter Metabolism in Anorexia Nervosa.- Sleeping and Waking EEG in Anorexia Nervosa.- Gastric Function in Primary Anorexia Nervosa.- Psychophysiological Indices of the Feeding Response in Anorexia Nervosa Patients.- Endocrine Function in Magersucht Disorders.- Hypothalamic Pituitary Function in Starving Healthy Subjects.- Perceptions of the Body in Anorexia Nervosa.- Treatment of Anorexia Nervosa: What Can Be the Role of Psychopharmacological Agents?.- The Basis of Naloxone Treatment in Anorexia Nervosa and the Metabolic Responses to It.- PET Investigation in Anorexia Nervosa: Normal Glucose Metabolism During Pseudiatrophy of the Brain.- Concluding Remarks.