There are two types of anorexia. In the restricting type of anorexia, weight loss is achieved by restricting calories (following drastic diets, fasting, and exercising to excess).
The reasons behind the development of Anorexia will differ from person to person known causes include genetic predisposition and a combination of environmental, social and cultural factors.
It is commonly accepted that Anorexia is more frequently diagnosed in females across the ages. However, a recent population study has suggested that in adolescents, there are an equal number of males and females suffering from this illness.