Bulimia nervosa

Signs and Symptoms:
Bulimia is often accompanied by the following signs and symptoms:
Binge eating of high-carbohydrate foods, usually in secret
Exercising for hours
Eating until you are painfully full
Going to the bathroom during meals
Loss of control over eating, with guilt and shame
Body weight that goes up and down
Constipation, diarrhea, nausea, gas, abdominal pain
Dehydration
Irregular menstruation or lack of menstrual periods
Damaged tooth enamel
Bad breath
Sore throat or mouth sores
Depression

What Causes It?:
No one knows what causes bulimia, although there are several theories. Bulimia may have a genetic component, and there is some evidence that women who have a sister or mother with bulimia are at higher risk of developing the condition. Families may put an overemphasis on achievement, or may be overly critical. Psychological factors may also be involved, including having low self-esteem not being able to control impulsive behaviors, and having trouble expressing anger. Some people with bulimia may have a history of sexual abuse. People with bulimia may also experience depression, self-mutilation, substance abuse, and obsessive-compulsive behavior. Cultural pressures to appear thin contribute to the disorder, particularly among dancers and athletes.