Menstruation

Menstruation, also known as your period, is the shedding of the uterine lining once a month as part of the menstrual cycle. Menstruation typically lasts two to seven days.

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More on Menstruation

How Your Period Changes During Your 20s, 30s, and 40s

From easier cramps to a heavier flow to more PMS mood swings, here's a guide on what to expect decade by decade—and when a change to your cycle might be a sign of something serious.

Mom's Viral Post Celebrates That 'Some Women, Some Non-Binary People, & Some Men' Get Their Periods

Milly Bhaskara says that if her 4-year-old can grasp inclusivity, most of us can open our minds.