Menstruation Action Canada for Sexual Health and Rights
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Menstruation, often called a period, is the regular discharge of blood and tissue (known as menses) from the inner lining of the uterus through the vagina*. Your first period usually begins between 12 and 15 years of age (but can start as early as 8), a point in time known as menarche.
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Menstruation Action Canada for Sexual Health and Rights
![](https://www.actioncanadashr.org/sites/default/files/styles/teaser/public/2023-04/vaginas-and-vulvas.png?h=8893360f&itok=nz-e5XWR)
Menstruation Action Canada for Sexual Health and Rights