Menopause, the cessation of the menstrual cycle, is a natural part of aging in women. Defined as not having a period for at least a year, menopause occurs at an average age of 51, although onset can vary widely.

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Hot Flashes Are a Common Sign of Menopause—and They May Also Increase Heart Attack Risk

An estimated 75% of women experience hot flashes during menopause—and they're more than just a nuisance.