Alcohol and Breast Cancer

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Abstract
OF the approximately 17 cohort and case–control studies that have investigated an association between alcohol intake and breast cancer, all but three have shown an increase in risk. Impetus for these investigations was provided by the 1977 case–control study of Williams and Horm.1 In rather quick succession, other case–control studies in France, Italy, and the United States reported the same findings. For the most part, these studies were based on large numbers of cases and controls, and most were not limited to patients in single hospitals. As in most case–control studies, alcohol intake was ascertained at the time of diagnosis, . . .