Of the many immune related disorders linked with the celiac condition, the best established connection is with Type I diabetes (mellitus). Type I diabetes occurs at a rate of about 0.5% in the general population, but at a rate estimated at 5-10% among celiacs. Normally the diabetes is diagnosed first, both because this form of diabetes tends to strike early in life and its diagnosis is certain. No connection has been found with the more common form of diabetes (mellitus= honey , from the sugar laden urine when uncontrolled), Type II which occurs at a rate of 2-2.5% in the general population.
References: Gluten Intolerance Group of North America newsletter, V. 13, Issue 2, 1987; New York Times, Sept. 13, 1994, genetics study by Dr. John Todd at Oxford, summarized by Kemp Randolph.
For more information see our Related Disorders page.