I have been gluten-free since April 2011 and dairy, peanut and egg free since April 2012. Nothing has made a difference yet. I believe I was tested for T4 free and T4, T3 uptake and thyroid antibodies which were all in normal range. Before I went gluten-free I had a low TSH 0.307 but now miraculously is within normal range. I don't know details but am getting retested again at the end of January. I have symptoms of fatigue, cold all the time and constipation, but unfortunately the cold and fatigue can match many other autoimmune diseases.