The main purpose of this study was to identify the knowledge levels of adolescent girls regarding risk factors of anorexia nervosa and its impact on health status. Conducted study to assess the risk factors of anorexia and found Body size overestimation is a fundamental feature of anorexia nervosa. The extent or even existence of body size overestimation in anorexia nervosa is controversial. The most recent review found that only half the studies reported overestimation of body size in individuals diagnosed with anorexia nervosa. The remaining studies found no overestimation or in some instances