I have had chronic, life altering diarrhea all my adult life. I tried all sorts of things but never tried cutting out gluten because A) I always heard that it was a crock unless you have celiac disease and, B) I thought it would be too hard to do. I cut way back on carbs a few years ago when my husband was diagnoses with Type II Diabetes and my digestive track improved greatly. So I thought my problems were related to eating sugars/carbs (I didn't think about how I was also greatly reducing gluten at that time, duh!) But when I got my cancer diagnosis had lost 20 lbs and they wanted me to gain weight. So I threw out my low carb diet and ate carbs with abandon for a few days and felt awful! All the old out of control diarrhea problems and gut pain came roaring back. I then realized that eating more carbs meant I had also gone on a gluten bender. I cut out all gluten and within a week or two I had a truely normal digestive system for the 1st time in over 40 years! I also have RA which has been in remission since around the same time that I lowered my carb intake. Don't know for sure that it's related, but I don't want to find out. I have a cancer dietician who insists that "gluten free" is just a fad. She claims there is no real test for it. On the other hand I have friends who are gluten free who insist they have been tested. One of my friends' Drs believes that NOBODY should eat gluten. It turns out that cutting out gluten isn't as hard as you might think. Gluten free or gluten friendly stuff is pretty easy to find. I don't know if this is the proper place to name brands/stores etc...But I have found a ton of good alternatives. My gluten free friends were the best resource. I'd say give cutting out gluten a try for a couple of weeks. The difference was so dramatic for me that I don't feel I need a test. Good Luck! I hope you get an answer.