Politis

Blood Test Predicts Crohn's Disease Years Before Symptoms Appear

Published January 14, 2026, 11:19
Blood Test Predicts Crohn's Disease Years Before Symptoms Appear

New research suggests a simple blood test can predict the onset of Crohn's disease years before symptoms manifest. The test measures the immune response to flagellin, a protein found in gut bacteria, and is found to be elevated in individuals who later develop the disease. Crohn's disease is a chronic inflammatory condition of the gastrointestinal tract, with increasing incidence rates, particularly in children. The research, led by Dr. Ken Croitoru, highlights the importance of the interaction between gut bacteria and the immune system in the development of the disease. The presence of flagellin antibodies before symptom onset suggests that the immune reaction may be a trigger for the disease rather than a consequence of inflammation. The findings, published in the journal «Clinical Gastroenterology and Hepatology», are expected to lead to new approaches for early diagnosis, prevention, and treatment of Crohn's disease. Early diagnosis is particularly crucial, as it allows for prompt treatment initiation and can significantly improve patients' quality of life. The research is part of the larger «Genetic, Environmental and Microbial Project» (GEM), which collects data from over 5,000 healthy relatives of individuals with Crohn's disease, aiming to better understand the factors contributing to the disease's development. Data collection began in 2008 and continues to this day.