I have a thyroid problem hyper /hypo for over 30 years and now have Firbomyalgia. I read a book on a diet for it and it said to take Selenium, I am now taking ACE WITH SELENIUM --+ ZINC... One tablet... Wasn't quite sure what Selenium was so looked it up and found this as follows;
Selenium also plays a role in the functioning of the thyroid gland and in every cell that uses thyroid hormone, by participating as a cofactor for the three of the four known types of thyroid hormone deiodinases, which activate and then deactivate various thyroid hormones and their metabolites: the iodothyronine deiodinases are the subfamily of deiodinase enzymes that use selenium as the otherwise rare amino acid selenocysteine. (Only the deiodinase iodotyrosine deiodinase, which works on the last break-down products of thyroid hormone, does not use selenium).
Selenium may inhibit Hashimoto's disease, in which the body's own thyroid cells are attacked as alien. A reduction of 21% on TPO antibodies was reported with the dietary intake of 0.2 mg of selenium.
Increased dietary selenium intakes reduce the effects of mercury toxicity and it is now recognized that the molecular mechanism of mercury toxicity involves irreversible inhibition of selenoenzymes that are required to prevent and reverse oxidative damage in brain and endocrine tissues.
Any thoughts or opinions would be much welcomed. Sam 
so unless I go private I will never know, I have recently been diagnosed with Hashimotos, though have had hypothyrodism for years, its only these last three that I'v had any real problems with it, but I am now, like many others trying to optimise all I can to help myself feel more human
Selenium and zinc/ effects on thyroid function
Understanding deiodinases and conversion problems.
What exactly is Thyroid Peroxidase?
