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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.
About 1 out of 4 people of Ashkenazi Jewish heritage is a carrier of one of these genetic conditions, most commonly of Gaucher disease, cystic fibrosis, Tay-Sachs disease, familial dysautonomia, or Canavan disease.