Anorexia most commonly has its onset during adolescence, especially among girls aged 9 to 12, though it can affect people of any age, gender, race or background. Anorexia nervosa occurs 10 times more frequently in females than males. Anorexia is associated with depression, obsession with dieting and weight loss, hair loss, and unhealthy weight loss methods like diet pills, laxatives and vomiting.