I did not know that gluten depresses thyroid activity but according to this article it does exactly that. It also tells us that “thyroid disease was 3 times higher in folks diagnosed with celiac disease” Thats pretty grim. It is also another very good reason to ditch gluten. Check out the lists of signs and symptoms that your thyroid is off and find out it any of these pertain to you. You just may find that its been gluten at the root of your ailments all along. Gluten Free School shares this amazing information.