Drinking three brews per day (30 g of alcohol from beer) increased the risk of stomach cancer by 75% (65% for all forms of alcohol) compared to very light consumption. However, if beer drinkers had a genetic variant to the alcohol dehydrogenase gene cluster (ADH1), their risk of stomach cancer increased by more than 700% compared to light consumption and no mutation.
PositiveTip: Avoiding all forms of alcohol consumption is prudent to minimize the risk of stomach cancer, but beer appears to be especially potent.