Scott Adams 270 Report post Posted August 1, 2016 Symptoms and damage in celiac disease is caused by partially-degraded gluten peptides from wheat, barley and rye. Susceptibility genes are necessary to trigger celiac disease, but they can't do it alone. Some researchers suspect that these susceptibility genes might get help from conditions resulting from unfavorable changes in the microbiota. View the full article Quote & Reply Share this post Link to post Share on other sites