I did have this worry at the start. That was more than a year and a half ago, when this forum did not have as much experience with Iodine supplementation as it has now.
As far as I know, nobody here experienced a declared Hashimoto through excess Iodine supplementation.
I for one did not.
I had a choice :
- Risk hypothetical Hashimoto through excess Iodine supplementation.
- Risk the problems of Iodine deficiency, which ARE SURE and MANY.
As you see I had no real choice. And I am glad I took all this Iodine.
Still taking it!