MedicalResearch.com Interview with:
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Dr. Benchimol[/caption]
Eric I. Benchimol, MD, PhD, FRCPC
Associate Professor of Pediatrics and Epidemiology, University of Ottawa
Division of Gastroenterology, Hepatology and Nutrition
Children's Hospital of Eastern Ontario
Ottawa, ON Canada
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: We found that living in a rural household (compared to urban households) was protective against developing inflammatory bowel disease (IBD). People living in a rural household were around 10% less likely to get IBD (Crohn’s disease and ulcerative colitis).
While our finding that IBD was more common in people living in urban households was similar to other studies from around the world, there were a number of new, interesting findings:
- Living in a rural household was most protective against pediatric-onset IBD. In fact, it was not protective in IBD with onset between ages 18-39, 40-64, or 65 and older at diagnosis.
- Living in a rural household in the first 5 years of life was highly protective against IBD later in life.
These findings indicate the importance of early life environmental exposures in the subsequent development of
IBD. This effect has been seen in the inflammatory bowel disease literature when examining other environmental risk factors, particularly early-life antibiotic use and air pollution. These risk factors seem to have the strongest effect of increasing the risk of childhood-onset IBD, and not adult-onset disease.