I got tested for celiac and it was negative.
I don't know if it's gluten or some other floating variable. When I eat it, I get very sick. When I don't I feel much better. I went to my dr (no, not an essential oil salesman) and they did a blood test and it showed antibodies to gluten. When I went off, my symptoms were gone by 2 weeks after 2 years of misery.
The research that says otherwise can kiss my grits.