I don’t think the Crohn’s part is right. I remember researching Crohn’s/UC when my brother’s Crohn’s flared up a couple of years ago. The consensus seemed to be that it was good for UC but was actually a trigger for Crohn’s in your average Caucasian[li]. Spooky, because he got his first symptom the day after his first cigarette.[/li]
Anyway, no cite, but the submission by Anonymous in the Cecil article supports this and the data that Cecil reviewed mentions UC but not Crohn’s.
I know, but there really did seem to be a difference in the disease between traditional races.