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.