Menstruation

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About Menstruation

Menstruation, also called the menstrual cycle, prepares the sexually mature, female body for pregnancy each month. Menstruation is monthly bleeding that begins in girls around 12 years of age. Because bleeding associated with the menstrual cycle happens regularly or periodically, it also is referred to as a menstrual period or, more simply, as a "period." Some girls get their first menstrual period as young as 9 years of age, and others do not begin menstruating until 15 ye...Read the full article