Anorexia Nervosa and Bulimia: Nature or Nurture

Anorexia nervosa and bulimia: Nature or nurture?

A) Nature: chemical imbalances in the hypothalamus and pituitary glands seem to be associated with eating disorders.
B) Nurture: Western culture exerts pressure on women to be thin.
C) Nurture: overly demanding or controlling family environments tend to be associated with the development of eating disorders.
D) Nature and nurture: all these factors may come into play.