Menstruation usually begins around two years after breast development, often between the ages of 12 and 13. This first period is called menarche. The menstrual cycle typically spans about four weeks, ...

Girls in the United States are getting their periods earlier, and it's taking longer for them to become regular, according to a study. The age at which women get their first period, known ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A quick scan across TikTok will reveal the truly terrible reputation the luteal phase—or the last two ...

Women who cross the age of 30 may undergo some physical changes, including hormonal imbalances. There are a few key signs ...

When Emma Williams-Tully was 10 years old, she woke up in the middle of the night in a pool of blood. After rushing into her parents’ bedroom, her mother explained that she’d started her period. But ...