Maybe because of race. From https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130615/#:~:text=Crohn's%20disease%20is%20found%20in,3%5D%E2%80%93%5B12%5D https://www.

Maybe because of race. From https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130615/#:~:text=Crohn's%20disease%20is%20found%20in,3%5D%E2%80%93%5B12%5D https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130615/#:~:tex.... "Crohn's disease is found in all racial groups worldwide. However, historically, the highest prevalence rates have been reported in white populations, particularly those of North America and Europe, with significantly lower rates seen in black and Asian populations within these or any other foreign country"