You are very young. Remember the data about how certain aquatic tadpoles , and salamander precursors will remain in one stage of growth if iodine-starved, and can even reproduce in these forms ? Yet, if given sufficient iodine, they lose their gills and tails and become land-based creaturs ? (If not, I'll re-post)
Well, imagine humans who are insufficient in iodine. What will the changes be for them, if they suddenly were to receieve the correct amounts of Iodine ? The data would seem to predict that they too will turn into something higher up on the scale than they were when they were iodine-deficient. These changes are profound in tiny creatures, and even more profound in the big apes. Iodine is the ubermensch nutrient.
Moreless helps treat H.I.S by promoting kelp, and that is a good thing, even though he spins yarns in other directions.