Hi Celey,
Yes i've been on an (80%) gluten free diet for the last few years. It's nearly impossible (for me personally) to adhere 100%. But i definitely noticed an improvement - especially when i first started this diet. I have alot less gas and i know the bloating would be even worse than it already is (if that's possible!!) if i wasn't eating gluten free products. As i said - the tests i've had done show negative for coeliac - but i know for certain that i must be quite intolerant of gluten for this diet to make such a difference to me.
Unfortunately right now i don't see the benefits quite as much as i did at first. But that's only because in the last year or so the scar tissue has been causing the narrowing and constant bloating.
Have you tried cutting down your sugar intake at all?