摘要：AbstractStress may alter menstruation. We studied menstrual patterns and stress in 254 undergraduate medical students. Students maintained menstrual records over six months. DASS questionnaires measured stress. In year 1 and 2 students, persisting normal cycles were 39.4% and 36.5%; normal becoming abnormal were 28.8% and 23.1%; abnormal becoming normal were 19.2% and 17.3%; persisting abnormal were 12.5% and 23.1%. Students with moderate to severe stress (20% and 21%) had less stress at six months (13% and 15%) Most students have normal menstrual patterns, and no stress. Stress if present tends to decrease with time.
