title: Difference between postpartum and nutritional amenorrhea.
mesh_terms: D000568:Amenorrhea / Q000209:etiology* / Q000503:physiopathology; D001835:Body Weight; D005260:Female; D006801:Humans; D007774:Lactation; D009748:Nutrition Disorders / Q000150:complications; D011247:Pregnancy; D013997:Time Factors