title: Postpartum amenorrhea: hormones versus nutrition.
mesh_terms: D000568:Amenorrhea / Q000209:etiology* / Q000503:physiopathology; D001942:Breast Feeding; D005260:Female; D006801:Humans; D007774:Lactation; D009747:Nutritional Physiological Phenomena; D011155:Population Control; D011247:Pregnancy; D011388:Prolactin / Q000502:physiology; D011644:Puerperal Disorders / Q000150:complications
chemical_list: D011388:Prolactin