"Yes and that's only one of many beneficial things it could affect which Jim Humble says it doesn't or maybe he thinks it's insignificant.
It may be in the short term but with long term use and especially with thyroid problems already... well you can imagine there's some uncertainty there."
I think most people are choosing to do Miracle-Mineral-Supplement over a long period of time (unless they have a life-threating disease). So, if MMS really is destroying thyroid functions, something should be taken to balance this out.
I don't even know if you can do MMS and Iodine simultaneously. But I can't see why not.