“BCPP Volunteer Andrea Dannenberg interviews BCPP Director of Science Sharima Rasanayagam, PhD about the scientific links between drinking alcohol and breast cancer risk. They also discuss how to navigate drinking alcohol, given its links to breast cancer.
Overall, most authoritative reviews and meta-analytic studies support the assertion that alcohol consumption is causally related to breast cancer, and many studies support a dose-response based upon increments of 10 grams/alcohol per day. A standard drink (12 ounces of beer, 5 ounces of wine, or one shot of liquor) has approximately 14 grams of alcohol.
Major reports by the Interagency Breast Cancer and Environmental Research Coordinating Committee (IBCERCC) and the Institute of Medicine (IOM) listed alcohol as a known risk factor for breast cancer, and the IOM indicated that alcohol has one of the clearest relationships to the disease.”
Read further from Breast Cancer Prevention Partners (USA, March 2021)