Breast Cancer: Does Stress Fuel Its Spread?

By Maria Cohut March 16, 2019

Fact checked by Jasmin Collier

New research in mouse models shows that stress hormones can help breast cancer grow, spread, and diversify, which makes it harder to treat. A study in mice sheds light on the mechanisms through which stress can contribute to the spread of breast cancer.

Breast cancer is one of the most common types of cancer.  In the United States, there were about 266,120 new cases last year, according to the National Cancer Institute.  Although breast cancer is also one of the most treatable types of cancer, once it metastasizes — that is, grows and spreads — it can be quick to diversify.

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