This new review investigated the effect of alcohol on 23 cancer types. They included 572 case-control and cohort studies and using meta-analysis and a dose–response meta-regression model found relative risks for heavy drinkers compared with nondrinkers and occasional drinkers were 5.13 for oral and pharyngeal cancer, 4.95 for oesophageal squamous cell carcinoma, 1.44 for colorectal, 2.65 for laryngeal and 1.61 for breast cancer.
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