The American Cancer society's pages on breast cancer in men lay out the facts. About 2,000 men are diagnosed with breast cancer each year, which makes it rare: about 100 times more women get the disease. It is known that men, like women, are more likely to develop cancer if they have certain mutations of the BRCA1 and BRCA2 genes. Family history and age contribute to a man's likelihood of developing the disease as well.
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