I'm not celiac, but something in wheat and barley gives me mouth ulcers. I only determined that after I got past 40, and started to experience bloating from br

I'm not celiac, but something in wheat and barley gives me mouth ulcers. I only determined that after I got past 40, and started to experience bloating from bread consumption. In giving up bread, I then noticed that my ulcers ceased. So a bit of experimentation established that I can consume small quantities, but if I eat wheat products for more than a couple of days in a row, the ulcers come back. I later determined that barley has a similar effect due to a specific seasonal dish also triggering the ulcers. It is now generally easy enough to largely avoid both grains, and not worry about incidental consumption due to the fact that lots of products include wheat . As to which fraction of the grains is the cause, I don't really care - I just avoid the two grains.