Vitamin D deficiency, Intestinal Flora and Celiac Disease
A study published at FASEBJ (Journal of the Federation of American Societies for Experimental Biology) indicates that addressing and avoiding vitamin D deficiency may suppress the immune response which leads to intestinal inflammation disorders as well as celiac disease..
In short, this could mean that celiac disease may be induced by early exposure to a combination of gluten and strains of intestinal flora while also suffering from insufficient vitamin D in your diet.
To further corroborate this idea, there are two additional recent studies which indicate that:

1) vitamin D assists in preserving the intestinal mucosal barrier,  and
2) that individuals born in the summer (and who thus experience their early months during the winter with less vitamin D providing sunlight) are more likely to develop celiac disease. More......