Turns out, a bacterium known for causing stomach cancer might also increase the risk of certain colorectal cancers, according to a study led by Duke Cancer Institute researchers. The finding was published in the Journal of Gastroenterology, and describes an association between antibodies to H. pylori bacteria and an increased risk of colorectal cancers, although it does not establish the bacteria as a definitive cause. In an analysis of more than 4,000 colorectal cancer cases culled from large, diverse cohort studies, the researchers found a significant correlation between colorectal cancer incidence and those who had been infected with a virulent strain
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