A Perspective On High Dose Iodine Supplementation – Part VIICan High Dose Iodine Suppress Iodine Uptake Into The Thyroid?

IN THE LAST INSTALLMENT OF THIS SERIES I EXAMINED IN DETAIL HOW IODINE FINDS IT WAY INTO THE THYROID. As you may recall, this process is largely regulated by a mechanism called the sodium iodide symporter (NIS). Given its complexity, though, why exactly is it important that we understand the NIS and the whole process of transport into the thyroid? The reason, as I suggested, is the fact that, despite all the very positive (iodine and breast health) and negative information I have presented on iodine so far, the main controversy underlying the issue of milligram iodine dosing is the impact high dosing has on the thyroid. Is it harmful to the thyroid?