I have battled IBS-C for two decades. Recently, a colonoscopy showed I had a tortuous colon. I relayed this info to a separate GI I'm seeing, (insurance issues).....and the GI told me there is no evidence to support that a tortuous colon can cause/complicate IBS. Is that true? The enormous daily discomfort I feel happens to be in my descending colon....which is exactly where the colonoscopy showed the tortuous colon. It's hard to me to fathom that as a coincidence.