You've brought up something that I've heard before, but you presented it in a new light.......
I don't know how long it would take, but if a "third-world" diet was to be created, it might help all of us in the long run...I've heard that people w/UC who have a bad flare and end up in the hospital are fed an "elemental" diet....fed through a tube w/base food (ie, protien, carbs, etc. that are pre-broken down..like when a momma bird feeds here babies).
Anyway, the lack of "high-fructose corn syrup", "caramel", yellow #5, etc. could help the body in it's healing process.
I'll have to look into that....
Diagnosed with UC in 1997
Presently on Pred. and no options to do anything else....."in bed with Pred.." LOL!