Anorexia Nervosa, as described in ICD-10, is a disorder characterized by deliberate efforts to lose weight, and a distorted body self-perception. The disorder is most common in adolescent girls and young women, and can lead to hormonal and metabolic changes caused by malnutrition. The symptoms of anorexia nervosa include restricted dietary choice, excessive exercise, self-induced vomiting, and the use of appetite suppressants and diuretics.