I had the runs most days for about a year and I finally went to the doc who sent me to the GI doc who said "colonoscopy" which said "nothing to see here but a few polyps we removed". I asked "what about the constant runs?" "Dunno--no signs of IBD--just IBS-D I guess". $2500.

I figured it out. Apparently sometime the prior year or two I developed an intolerance to jalapenos. As I did Mexican or spicy chinese every three days, or so, it was just a constant issue.

Removing Jalepenos from the diet didn't totally fix the problem, but it's much better.