Your risk of endometriosis is higher if:
- You are between puberty and menopause (around age 50). After estrogen levels drop at menopause, your risk disappears.
- Your mother or sister has or had endometriosis. This makes it more likely you will have severe symptoms. This risk seems to be passed on by the mother.
- Your menstrual cycles are less than 28 days.
- Your menstrual flow is longer than 7 days.
- You started menstruation before age 12.
- You have never been pregnant.
- Your uterus, cervix, or vagina has an abnormal shape that blocks or slows menstrual flow.