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A new European study on colonoscopies – the largest of its kind – has complicated results, and it’s left some people wondering whether they should have the procedure to screen for colon cancer. (Cohen, 10/10)

For decades, gastroenterologists put colonoscopies on a pedestal. If everyone would get the screening just once a decade, clinicians believed it could practically make colorectal cancer “extinct,” said Michael Bretthauer, a gastroenterologist and researcher in Norway. But new results from a clinical trial that he led throw confidence in colonoscopy’s dominance into doubt. (Chen, 10/9)

Colonoscopy screening exams that are recommended for older US adults failed to reduce the risk of death from colon cancer in a 10-year study that questions the benefits of the common procedure. (John Milton, 10/9)

In one of the largest studies ever, researchers found colonoscopy screenings cut cancer risk by 18 percent and made no difference in death rates. (10/10)