Among other diseases associated to Diabetes is Celiac Disease. I don't have it yet(touch wood) but my Uncle who has been a Type 2 for over 20 yrs. was dxd. with Celiac after having Type 2 for about 10 yrs. Like Diabetes isn't enough. Here is a Great site for People who do have or may think that they may have this condition. Terrific Celiac Forum also. 
Is there a connection between celiac disease and diabetes?*
Is there a connection between celiac disease and diabetes?*