I dont believe there is a human study on SMA and iodine..

But there are other studies, just for a start;
http://www.foodnavigator.com/Science/Folate-and-vitamin-B12-might-alleviate-SMA-symptoms

"• In animal studies, lithium has been shown to be an essential trace mineral. When lithium is removed from the diet of farm animals, they appear to develop numerous chronic, degenerative diseases. These include atrophy of the spleen, development of cysts and tumors, severely depressed immune systems, and decreased fertility. Additionally, the quantity of breast milk is diminished in nursing mothers with inadequate lithium stores."
http://www.infowars.com/is-lithium-orotate-good-or-bad-for-you/