A decade of warning in a blood sample: antibody patterns may flag bowel disease years early

Crohn's disease and ulcerative colitis often smoulder for years before anyone names them. Researchers analysing stored blood samples — 2,000 samples from 500 people, including 200 who later developed Crohn's and 200 who later developed ulcerative colitis — found that future patients carried a narrower, distinctive range of antibody responses, with some changes visible in samples taken a full decade before diagnosis. The findings were presented at UEG Week 2026, the European gastroenterology congress. This is conference research, not a ready screening test: patterns that separate groups in a study do not automatically make a reliable test for the general public, and no one yet knows what treatment an early signal should trigger. But a ten-year head start, if it holds up, changes what 'early' means.

SDG 3 · Good health and well-being — Mechanism: tech innovation