Study Leaves no Room for Doubt
According to results from the Women's Health Initiative study released at the annual San Antonio Breast Cancer Symposium, taking hormones for menopause - hormone replacement therapy (HRT) - doubles a woman's risk of breast cancer after 5 years of use. The study was federally funded, and the results are the most dramatic to date.
Additionally, the investigators found that every woman on study who took progestin and estrogen for a minimum of 2 years increased their risk for breast cancer.
However, when they stopped taking HRT the risk was reduced and returned to what is considered a normal risk level 2 years after stopping the treatment.
DEC-15-08: Study firmly ties hormone use to breast cancer [MSNBC: HRT DOUBLES BREAST CANCER RISK]