Eating disorders are serious disturbances in eating behavior. These include unhealthy reduction of food intake or severe overeating, as well as feelings of distress or extreme concern about body shape or weight. Eating disorders are not due to a failure of will or behavior. Rather, they are real treatable medical illnesses in which certain patterns of eating take over a person’s life.
The main types of eating disorders are anorexia nervosa and bulimia nervosa. A third type, binge-eating disorder has been suggested but not approved as a psychiatric disorder.