Myth: Breast cancer is contagious

By NBCF team

Last updated on Mar 3, 2026

Medically reviewed on Jan 31, 2026

by: Lillie D. Shockney, RN, BS, MAS, HON-ONN-CG

Here’s the truth

Breast cancer is not contagious. You cannot catch breast cancer from someone else or transfer it to someone else’s body. Breast cancer is the result of uncontrolled cell growth of mutated cells that begin to spread into other tissues within the breast. While breast cancer is not usually preventable, you can reduce your risk of developing breast cancer by practicing a healthy lifestyle, being aware of the risk factors, and following an early detection plan so that you will be diagnosed early if breast cancer were to occur.

Sources:
American Cancer Society