Does she have a family history of breast cancer? If a mother or sister had breast cancer there is twice the risk and if both have it there is three times the risk of developing breast cancer.

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Yes, it is possible that she has a family history of breast cancer. If her mother or sister had been diagnosed with the condition, then this would mean she is at twice the risk for developing breast cancer herself. This increased risk is due to genetic factors, as certain inherited gene mutations can be passed down within families and lead to greater susceptibility for particular conditions such as cancer.

When both her mother and sister have been diagnosed with the disease, then this increases her risk to three times as much. It is important to discuss any family history of breast cancer with one’s healthcare provider in order to determine appropriate screening and other preventative measures that may be necessary depending on individual circumstances. Additionally, if there are other members in her family who have also been diagnosed with similar types of cancers (e.g., ovarian or colon), then additional testing may be recommended.

Ultimately, understanding one’s familial risk factors when it comes to certain diseases such as breast cancer can help guide decision-making related to prevention/early detection methods which can ultimately save lives by catching any potential issues early on and allowing for more effective treatment options going forward.