Asthma Identified As Potential Risk Factor for IBD, Canadian Study Suggests

Asthma Identified As Potential Risk Factor for IBD, Canadian Study Suggests
Asthma increases the risk for Crohn’s disease and early- and late-onset ulcerative colitis, a Canadian population-based study suggests. The study, “Asthma Is Associated With Subsequent Development of Inflammatory Bowel Disease: A Population-based Case–Control Study,” was published in the journal Clinical Gastroenterology and Hepatology. Inflammatory diseases affecting the respiratory and gastrointestinal tracts, such as asthma and inflammatory bowel diseases (IBD), are the result of complex interactions between genetic and environmental factors. Several of these risk factors are common to both diseases. Some studies suggest a link between IBD and respiratory disorders, including asthma and chronic obstructive pulmonary disease. However, asthma is often diagnosed earlier in life than IBD, which led the study’s authors to hypothesize that “individuals diagnosed with asthma were more likely to be subsequently diagnosed with IBD compared with those without asthma.” They performed a population-based, case-control study to determine the effect of asthma on the development of Crohn’s disease and ulcerative colitis, two forms of IBD. Patient data were obtained from health administrative databases in the
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