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Breast cancer and alcoholic-beverage consumption
Abstract:
The relation between breast cancer and alcoholic-beverage consumption was evaluated in a case-control study of 1152 women with breast cancer and two groups of control women-519 with endometrial or ovarian cancer, and 2702 with non-malignant disorders. The relative-risk estimate of breast cancer, with allowance for all potential distorting factors, for women who had ever drunk alcoholic beverages relative to those who had never drunk was 1.4 (95% confidence interval, 1.0-2.0) when the comparison group was the group with endometrial or ovarian cancer and 1.9 (1.5-2.4) when the controls who had non-malignant disorders were the comparison group. The association was evident for beer, wine, and spirits. The association was not explained by any of the major known risk factors for breast cancer, but we had no information on dietary factors. The findings support the hypothesis that alcohol consumption, or related dietary factors, increases the risk of breast cancer.
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