he scientific name for anorexia is Anorexia Nervosa. People with anorexia become completely obsessed with weight and dieting. They develop a fear of becoming fat and have a distorted mental image of their body, always seeing themselves as fat, even when they are extremely thin. Common attributes of anorexic sufferers are under-eating, vigorous exercise, ritualistic food habits and abuse of laxatives cause excessive loss of weight. Most anorexic people have no history of being overweight.