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Eating Disorders The most common eating disorders are anorexia nervosa (AN) and bulimia nervosa (BN). There has been a large increase in sufferers in the last 20 years. Anorexia Nervosa According to the DSM there are four criteria for AN * Weight-must be less than 85% of expected * Anxiety-Intense fear of becoming fat * Body image distortion-Individuals perception of their body weight is distorted * Amenorrhoea-The absence of menstruation 90% of patients are female and usually starts in adolescence. The increase in frequency in the western world is probably due to media emphasis on slimness. About 5% of sufferers die from starvation. Bulimia nervosa Criteria for BN * Binge-numerous episodes of binge eating in which too much food is eaten in little time * Purge-Frequent inappropriate compensatory behaviour to prevent weight gain, e.g. self induced vomiting, excessive exercise * Frequency-The above behaviours occur at least twice a week over a 3 month period * Body image-Individuals self evaluation depends excessively on weight * Distinct condition-Binge eating...

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