For women, just one alcoholic drink a day can increase breast cancer risk, according to a report released in May from the American Institute for Cancer Research and the World Cancer Research Fund that was cited by ASCO. That report analyzed 119 studies, including data on 12 million women and over a quarter of a million breast cancer cases, and concluded there was strong evidence that alcohol consumption increases the risk of both pre- and postmenopausal cancer, and that drinking a small glass of wine or beer every day — about 10 grams of alcohol — increases premenopausal breast cancer risk by 5 percent and postmenopausal risk by 9 percent.
“The more you drink, the higher the risk,” said Dr. Clifford A. Hudis, the chief executive of ASCO. “It’s a pretty linear dose-response.”
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