Menstruation is the time of month when a woman's womb (uterus) sheds its lining, causing bleeding through the vagina. Menstruation periods usually last about 3 to 5 days, but every woman is different. Follow the links below to find WebMD's comprehensive coverage about menstruation, how it occurs, when you should see a doctor, and much more.
The newest birth control pills suppress women's menstrual cycles. But is this wise?
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