Grodzinsky, et al:
High Prevalence of Celiac Disease in Healthy Adults Revealed by anti-gliadin Antibodies
ANNALS OF ALLERGY vol.69, July 1992, p. 66-70.

This study was done by testing random blood samples from healthy blood

donors. Donors with elevated levels were asked to undergo endoscopic examination. Some refused. One in 256 of those who underwent endoscopy were identified as having celiac disease. Everyone in this study thought themselves healthy enough to be donating blood without being asked to do so. Extrapolating from the number who consented to endoscopy, had the ratio remained constant, the proportion would have been One in 187. Again, these were healthy blood donors, not folks in a GI department of a hospital. welcomes your comments below (registration is NOT required).