Of course, this is just one study, and there are other conflicting studies. I only decided to look up sucralose, because I found that I really like Diet Rite Raspberry soda, and since I started drinking that, I have the runs every so often. So, to try my own limited experiment, I decided to stop taking sucralose, to see if the runs went away, and sure enough they have (this is a very un-scientific experiment, since I can't even account for all the other possible things that could have accounted for the same result).
I just thought I would post this link here, since I know it's so much more important for people with Crohn's to take care and replenish the good gut bacteria. Of course, since this is still unproven - it's just one observation, it has yet to be validated, so, make up your own minds.
I've made up mine, and I am going to try to avoid splenda and other artificial sweeteners.
Husband with Crohn's
Diagnosed March 2003 Ulcerative Proctitis
Diagnosed March 2008 Crohn's & C-diff, hospitalized 45 days
Canasa, Lialda, Remicade, VSL#3, Florastor
In Remission since June 2008
Stopped vancomycin for c-diff Jan 1 2009
C-diff free, until Sep 2, 2009
Fighting c-diff, I guess for life