Women who have infertility and who undergo hormone treatment are more likely to have dense breasts, a factor that may increase the risk of breast cancer.
Key steps for effective breast cancer prevention
Breast Cancer Epidemiology and Risk Factors: Epidemiology, Reproductive Factors, Endogenous Sex Hormones and Risk of Breast Cancer
Fertility Preservation Allows Mother to Have Twins After Breast Cancer Treatment
Breast Cancer: The Basics
The Importance of Breast Cancer Screening
Breast Cancer: Causes, Symptoms & Treatments
Breast Cancer - Women's Health Issues - Merck Manuals Consumer Version
Breast Cancer and Heart Health
How do hormonal contraceptives affect breast density?