<<Disclaimer: Verify this information before applying it to your situation.>> When I switched doctors 18 months ago at my first check up she did a blood tests that checked for many different things - which included thyroid. I do not know if that is standard countrywide, but it was for my doctor. The results of that test was that I have a hyper- thyroid. From the reading,etc. that I have done thyroid problems are common for Celiacs - now I won't say I did an extensive search - so if there is another viewpoint it wouldn't be surprising. For me there were no outward symptoms - although I have been told that high cholesteral, flu like symptoms, and poor health can be signs to thyroid trouble. So, take that for what its worth - for this is what I know. I will say that all I have to do is take a small gf pill a day to handle this, and wish that diabetes, and celiacs could be that simple to handle! Bonnie Hall