I initially though this too, and had one of those "this is it" moments. But it wasn't. As I paid to see a private endocrinologist, did a public and private thyroid blood test, AND bought and tried NatureThroid just in case.
I've also gone gluten free back in March and nothing....
I'm really very happy that it worked for you though!
Because no one deserves to live with these debilitating symptoms day in, day out.