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  "path": "/news/2026-05-year-mystery-scientists-gut-bacteria.html",
  "publishedAt": "2026-05-07T16:00:02.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "Since a landmark 2009 study, researchers have known that a common gut bacterium, Bacteroides fragilis, drives colon tumor formation, potentially leading to colorectal cancer, by secreting a toxin that damages the lining of the colon. But until now, the exact mechanism the toxin uses to latch onto those cells remained a mystery.",
  "title": "Solving a 15-year mystery: Scientists discover how gut bacteria toxin invades colon cells to trigger cancer"
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