A diet high in foods (such as processed meats) that enrich sulfur-metabolizing bacteria in the gut and thereby increase production of hydrogen sulfide (H2S) is associated with increased risk of early-onset colorectal neoplasia (colorectal adenomas or serrated polyps), researchers report in the November issue of Gastroenterology. These findings might help explain the recent and troubling increase in the incidence of colorectal cancer (CRC) in persons younger than 50 years.
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