Current scientific advances have not yet fully explained the causes of breast cancer, but the following are generally accepted risk factors for breast cancer: Women with breast cancer in their family. Those who have breast cancer in their first-degree relatives (parents, siblings, children) are 2-3 times more likely to develop breast cancer themselves than the average woman. People with certain benign breast diseases. The risk of breast cancer is related to the histological type of benign breast disease, and it is common to use “non-proliferative” and “proliferative” lesions to distinguish the different risks. Non-proliferative lesions do not increase the incidence of breast cancer, whereas the relative risk of breast cancer increases in proliferative lesions, especially in those with lobular or ductal atypical hyperplasia. Early menarche (before the age of 12) or delayed menopause (after the age of 55). Women who have not had children or have late childbirth (after 35 years of age) and those who have not breast-fed after childbirth. Post-menopausal and overweight.