A female’s first menstrual period, known as menarche, occurs during puberty. Menstruation indicates that the body is mature enough for reproduction. About 98% of girls begin their periods by age 15.
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What your first period says about your hormones
Did you know that a girl’s first period, known as menarche, is an indicator of her long-term hormonal health and future fertility? Sounds surprising, doesn’t it? While many women rarely think about ...
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