Celiac disease is an autoimmune disease because your body mounts a response to gluten complexed with your tTG molecules. If you have active celiac disease, meaning that you are consuming gluten, then you may be more likely to get sick since your body is using energy to attack itself, so it has less energy to protect itself against pathogens.
That's just the enlightenment I was going to get. I thought I was getting a lot of colds and they lasted longer that say if my husband caught it. So the Celiac can cause this. Such a bummer, huh?