7. Past Breast Cancer
If you have suffered from breast cancer in the past in one breast, you have a higher risk of developing cancer in the other breast or in a different part of the same breast. While the risk is low, it does, however, tend to be higher for young women with breast cancer.
6. Race and Ethnicity
Breast cancer risk does vary in women from different ethnicities and races. For instance, white women are more likely to develop breast cancer than African-American women. However, breast cancer is more common in African-American women under the age of 45, and African-American women are also more likely to die from breast cancer at any age. Asian, Hispanic, and Native American women are all considered to have a lower risk of developing and dying from the disease.
5. Dense Breast Tissue
Breasts are made of fatty tissue, fibrous tissue, and glandular tissue. There is a chance you might be told you have dense breasts if a mammogram shows you have more glandular and fibrous tissues and less fatty tissue. Women who have dense breasts are more likely to develop breast cancer than women who have average density, according to the American Cancer Society.Related: 7 Often Ignored Signs of Breast Cancer