My 15 yo & husband have IBS. When I mentioned my son's IBS symptoms to his pediatrician, he said to start him on Zantac. My son didn't have heartburn & it turns out he doesn't have enough acid to digest his food, causing a downstream effect of diarrhea. My son saw a pediatric GI MD & was tested for Celiac & Crohns & diagnosed with IBS. He was put on Probiotics & Citrucel which calmed his IBS for ~ 1 1/2 years. We also independently had an IgG drawn to identify food allergies/sensitivities.I found this book by Dr. Richard Ash & it was helpful to see all of the many pieces of information we had seen about IBS pulled together in 1 place so that we could understand how they fit together & impacted IBS. The book also offers a simple & logical way to test to be sure that IBS is the diagnosis and a treatment approach that has been effective in putting IBS patients in remission without the use of prescription drugs. I have since taken my son to Dr. Ash & he is following his treatment approach. The data he collected was eye-opening & the approach was personalized to the data. So far, my son is doing much better & the approach has been very methodical. We live in upstate NY & since our 1st visit, we have monthly phone calls in lieu of trips to NYC. A definite read!View Thread