We review the epidemiology, etiology, diagnosis, medical complications, and
treatment of patients with eating disorders. The gynecologic aspects of an
orexia and bulimia nervosa are discussed. Osteopenia due to hypoestrogenemi
a, malnutrition, hypercortisolism and low IGF-1 levels are frequent complic
ations of anorexia. Treatment frequently includes estrogen replacement. Nea
rly all patients with eating disorders have menstrual abnormalities such as
anovulation, oligomenorrhea and amenorrhea. Hypothalamic amenorrhea caused
by impaired pulsatile GnRH secretion is one of the four diagnostic criteri
a for anorexia nervosa and an early sign of the disorder. Patients with bul
imia frequently have inadequate follicular maturation or a disturbed luteal
phase. Nonetheless pregnancies can occur and often have an unfavorable eff
ect on the eating disorder. Pregnancies are at increased risk for spontaneo
us pregnancy loss, premature delivery, and intrauterine growth retardation.
Gynecologists have an important role in the secondary prevention of eating
disorders because many patients first seek medical attention for menstrual
abnormalities. An eating disorder should be ruled out before initiating tr
eatment for infertility.