The overall term Eating Disorders refers to several disorders, including Anorexia Nervosa, Bulimia Nervosa, and Binge Eating Disorder. The common feature of all these disorders is disordered eating behavior, often accompanied by a distorted body image, a compulsion to exercise, restriction of food, vomiting after meals, and a focus, but little pleasure in food. Anorexia Nervosa is diagnosed when a youngster's food restriction causes weight to drop 15% below what is normal. Bulimia Nervosa is characterized by attempts to binge and/or get rid of food already eaten. Binge Eating Disorder is also characterized by attempts to binge, but is not necessarily followed by attempts to get rid of food already eaten.Most recently neurochemicals have been implicated in the cause of eating disorders. Unhealthy eating behaviors can lead to serious medical problems. A combination of medication, cognitive behavior, individual and family therapy are the most common forms of treatment.