Men’s Breast Cancer Risk Factors
- Age increases the risk of breast cancer.
- Having the BRCA2 or BRCA1 gene mutation, or having a close relative with the mutation, raises a man’s lifetime risk from about 1 percent to about 7 percent.
- Having a family history of breast cancer—especially if it was diagnosed at age 40 or younger.
- Radiation exposure.
- Increased estrogen levels, from heavy alcohol use, cirrhosis or Klinefelter syndrome.
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