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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.
Scientists believe that Ashkenazi Jews are more susceptible to Crohnâs because they are 20 percent more likely than other Jews to have a gene mutation called CARD 15, which is located on chromosome 16.Lichtiger says the cause of the mutation is unknown.shkenazi Jews are also more likely to develop familial inflammatory bowel disease than non-Jews, according to a 2008 journal study published in the Wiley Online Library.