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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.
People who have allergies â particularly those that affect the nose and eyes-are more likely to have asthma. If you have allergies or asthma, your child is more likely to have it, too, because the tendency to develop these conditions is often inherited.