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Ethnicity â Although Crohnâs disease can affect any ethnic group, Caucasians and people of Eastern European (Ashkenazi) Jewish descent have the highest risk. American Jewish people of European descent are four to five times more likely to develop IBD than the general population.
Essential update: Study finds increased risk for inflammatory bowel disease in patients with asthma or COPD. In a population-based retrospective cohort study of 136,178 individuals with asthma and 143,904 individuals with COPD, Brassard and colleagues found a significantly increased incidence of IBD.here is a genetic predisposition for IBD (see Etiology), and patients with this condition are more prone to the development of malignancy (see Prognosis). Severe colitis noted during colonoscopy in a patient with inflammatory bowel disease.