Yes I eat a high raw diet no fruit no Sugar no starch (idealy) positively no gluten. I have never been vegan but I have consistently suggested that other peope cut back on the meat intake at least temporarily because doing so helped me quite a bit. Could have been just an HCL issue for me at that point. I started taking small amt of HCL today so wil know soon. Did not get any burning sensation so far.
I plan on using HCL & plant enzymes when I do have large meals with animal protein and cooked veges primarily.
what are the classic upper GI symptoms you are having?