Why does Breast Cancer happen? 5 biggest triggers

One of the strongest risk factors for breast cancer is inherited genetic mutations, especially in the BRCA1 and BRCA2 genes. These genes normally help protect cells from becoming cancerous. But when they mutate, this protection weakens, increasing the chance of breast cancer. Women with a BRCA1 mutation have up to a 72% lifetime risk, and those with BRCA2 have about a 69% risk of developing breast cancer

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