Psychological aspects of anorexia nervosa.

Research on anorexia nervosa (AN), its etiology and treatment, and the results of outcome studies are reviewed. Early studies focused on psychodynamic aspects of AN whereas recently the brain's neurotransmitters and hypothalamic area, particularly, having been investigated as contributing to symptoms of AN. No treatment is successful for all AN patients. Recovery is slow and is often resisted. Diet, psychotherapy, and drugs have sometimes alleviated symptoms for some AN patients but the root cause and the best treatment have eluded a century of research.