Celiac.com 02/08/1996 - The article was based on a study published in the same weeks Lancet which was conducted by Dr. Marios Hadjivassiliou and colleagues at the Royal Hallamshire Hospital in Sheffield, England. Dr. Hadjivassiliou tested patients with various undiagnosed neurological symptoms and found that 57% of them tested positive to gluten sensitivity. Specifically, they tested positive for gliadin antibodies, which means they have gluten sensitivity and not necessarily celiac disease. Sixteen percent of the patients were found to have full blown celiac disease, which is far higher than the estimated .004% level found in the normal population. Five percent of the patients with previously diagnosed neurological disorders such as Parkinsons disease were found to have the gliadin antibodies present compared to 12% of a healthy control group.