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| The magazine on: |
- Women's health
- Breast health
- Breast cancer
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Early Menstruation, Estrogen Exposure, and Risk |
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| Why does starting menstruation at an earlier age slightly increase your risk of breast cancer? |
To understand why women who begin menstruating at a young age are at a slightly elevated risk of developing breast cancer, one must understand the role of estrogen. Estrogen alone does not cause cancer. The hormone, estrogen, is an essential part of a woman’s physiology.
However, estrogen's principal function is to speed the process of cell proliferation. Therefore, estrogen can increase the chance of a mutation occurring and/or encourage the growth of cancerous cells once they appear.
The more estrogen a woman is exposed to during her lifetime, the greater the opportunity for the hormone to promote the growth of a tumor. The reason why women who began menstruation at an early age are at greater risk of developing breast cancer is because these women have had a longer lifetime exposure to estrogen.
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