The link between age at the onset of menstruation and breast cancer risk has been well-established. Studies show that women who begin their periods before age 12, as compared to women who started their periods at age 14 or older, have a 20% increase in risk.
But does this mean that every woman who began her period at a younger age should fret about getting breast cancer? Absolutely not! Remember that the age at which menstruation began is just a small factor contributing to a woman’s overall risk of getting breast cancer.
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