Why some may have prob with higher doses iodine

I just came across this info. Thought it was interesting.


http://www.healthsalon.org/290/cancer-alternative-treatments-selenium-iodine-...


Later studies showed that serum T4 was maintained at control levels when both dietary Iodine and selenium were low, but not when Iodine alone, or selenium alone, was low. Activity of thyroidal GSH-Px (erythrocyte glutathione peroxidase) was lowest in rats fed a diet containing high Iodine and low selenium. The results suggested that high iodine intake, when selenium is deficient, may permit thyroid tissue damage as a result of low thyroidal GSH-Px activity during thyroid stimulation. A moderately low selenium intake normalized circulating T4
concentration in the presence of iodine deficiency.

Animal studies have shown that the addition of selenium supplementation will alleviate the effects of excess iodine intake.[xxxix] Iodine and selenium deficiencies must both be resolved for iodine treatment to be effective.