Like all cancer, breast cancer is caused when genetic mutations allow cells to divide and grow in a disorganized way. Breast cancer is not the result of one genetic change — instead, cancer develops when many different genetic mutations occur.

Scientists believe that in most women, breast cancer develops as a combination of inherited and environmental factors. It remains unclear why some women develop breast cancer and other women don’t.

If you’re living with breast cancer, you might be curious about what the research says regarding potential causes of the condition. Take this five-question quiz to better understand what may cause breast cancer.

Talk With Others Who Understand

MyBCTeam is the social network for people with breast cancer and their loved ones. On MyBCTeam, more than 52,000 members come together to ask questions, give advice, and share their stories with others who understand life with breast cancer.

Do you have a family history of breast cancer? Share your experience in the comments below, or start a conversation by posting on your Activities page.