What percentage of breast cancer cases are attributed to genetic factors?

In the context of breast cancer, genetic factors play a significant role, but they account for a smaller percentage of total cases. The correct answer reflects that only about 5% to 10% of breast cancer cases are directly linked to hereditary genetic mutations, such as those in the BRCA1 and BRCA2 genes. This highlights that while genetic predispositions are important for a subset of individuals, the majority of breast cancer cases arise from non-genetic factors, such as environmental influences, lifestyle choices, and random mutations. Understanding this proportion is crucial in clinical practice and public health, as it indicates the need for broader screening and preventive measures beyond just focusing on genetics.