Is breast cancer hereditary, please answer?
The far majority of breast cancers are not caused by the mutated gene (called the breast cancer gene). So, if you are one day diagnosed with breast cancer, it is far more likely that it is coincidental rather than familial. “However, it is important to note that 85% of women with breast cancer have no family history of the disease. Family history only includes immediate relatives: mother, sisters, and daughters. If a family member was post-menopausal (fifty or older) when she was diagnosed with breast cancer, the lifetime risk is only increased 5%. If the family member was premenopausal, the lifetime risk is 18.6%. If the family member was premenopausal and had bilateral breast cancer, the lifetime risk is 50%.” http://www.thebreastcancersite.com/click… “Only 5-10 % of breast and ovarian cancer is inherited, meaning the majority of women who develop breast and/or ovarian cancer do not have the genetic mutation.” <
