Anorexia is a type of eating disorder that affects 0.5 to 1 percent of the female adolescent population (although men can develop the condition as well). People with anorexia have an intense and overpowering fear of body fat and weight gain, and may diet, fast, or overexercise to maintain an abnormally low weight.
People with anorexia can be extremely thin and still believe that they are overweight. The course and outcome of the condition will vary among individuals; some fully recover after a single episode, and some have a fluctuating pattern of weight gain and relapse.
(For more information on this disorder, click Anorexia. Topics discussed in this article include other signs and symptoms, the diagnostic process, and associated health risks.)