Is Breast Cancer Contagious?

— -- Question: Is breast cancer contagious?

Answer: Breast cancer is not contagious. Many people believe that sometimes it appears that breast cancer is contagious because the disease can occur in families with many members of the family affected over time or it can sometimes be diagnosed in communities in several women at the same time and this sometimes gives the appearance that breast cancer is contagious. But we are very certain, from a great deal of epidemiologic data and studying patients with breast cancer, that the disease is not passed from one person to another like an infectious disease.

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