For years I was drinking 8 to 10 big glasses of water a day. Couldn't find out what was causing my symptoms. Finally I cut down to drinking only when I'm thirsty. For about 2 months now I've only been drinking maybe a pint and a half of water daily. I eat everything and my symptoms are 80percent better. Some systems just can't process all that water.
Seems to me that IBS has hit epidemic proportions over the last ten years, which just happens to be about the time that they got us believing that everyone needs to drink 2-3 quarts of water daily. With all the crap they add to drinking water, it's a wonder I hadn't thought of this earlier. WATER was causing all my symptoms, that's what I've come to believe. I hope this helps someone else, worth a try anyway.