National Center for Complementary and Alternative Medicine (NCCAM)

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Menopause

Menopause is the permanent end of a woman's menstrual periods. Menopause can occur naturally or be caused by surgery, chemotherapy, or radiation. A woman is said to have completed natural menopause when she has not had a period for 12 consecutive months. For American women, this typically happens at around age 51 or 52.