Studies show that the peak age of onset of anorexia nervosa is between?

The peak age of the onset of anorexia nervosa is during the adolescence stage of an individual. Anorexia Nervosa refers to a psychological disorder where an individual has a distorted image of him/herself convincing the mind that the body is not proportioned. This disease triggers a person to choose to skip meals in a day or totally not consume any calories. It is common in adolescence as this is the stage of puberty where social/peers are the direct influence of self-image. The disease can be treated with a series of psychosis and it mostly affects women. 

If left untreated the disease can lead to excessive starvation or worst death.