Hi, I've posted before about Thyroid S I've been taking for nearly a year, not improving my hypothyroidism. I wonder if I have ME, but I am aware that it's difficult to diagnose.. I take lots of vitamin supplements A - D, and also selenium. I'm not a scientist, so I don't understand a huge amount.. There's a few websites saying that diet is crucial, one - Tom Brimeyer's says that being hypothyroid, effects liver function which is from scientific research. Has anyone changed their diet and found it useful? I try to be sugar, gluten and dairy free, but last night I had some cake at a celebration, and felt really rubbish afterwards..