What causes breast cancer in men?

There is no exact cause for how males develop breast cancer. But because men are born with a small amount of breast tissue, breast cancer causes some breast cells to divide more rapidly than healthy cells do. The accumulating cells form a tumor that may spread (metastasize) to nearby tissue, to the lymph nodes or to other parts of the body.
 
 
Inherited genes that increase breast cancer risk
Some men inherit abnormal (mutated) genes from their parents which increases the risk of breast cancer. Mutations in one of several genes, especially a gene called BRCA2, puts one at greater risk of developing breast cancer.
 
These genes normally make proteins that keep cells from growing abnormally, which helps prevent cancer. However, mutated genes aren't as effective at protecting you from cancer.
 
 
male breast cancer
 
 

Sources
  • "Male Breast Cancer." Mayo Clinic. Mayo Foundation for Medical Education and Research, 17 Feb. 2015. Web. 26 Apr. 2017.
  • Commissioner, Office Of the. "Breast Cancer—Men Get It Too." U S Food and Drug Administration Home Page. Office of the Commissioner, 27 June 2014. Web. 26 Apr. 2017.

 

 

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