
Biological
Like with anorexia nervosa, there is evidence of genetic predispositions contributing to the onset of this eating disorder. Abnormal levels of many hormones, notablyserotonin, have been shown to be responsible for some disordered eating behaviours. Brain-derived neurotrophic factor (BDNF) is under investigation as a possible mechanism.
There is evidence that sex hormones may influence appetite and eating in women, and the onset of bulimia nervosa. Studies have shown that women with hyperandrogenismand polycystic...