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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.
Among individuals of Eastern European (or Ashkenazi) Jewish descent, the incidence of Type 1 Gaucher disease is considerably higher (as many as 1 in 850 people) than in the general population (1 in 40,000-60,000). Approximately 1 in every 12 to 15 individuals of Ashkenazi Jewish descent is a carrier.