Primarily seafood. You can get it from a lot of other places, but they are unreliable. Plants grown in iodine rich soil will have iodine, but good luck identi

Primarily seafood. You can get it from a lot of other places, but they are unreliable. Plants grown in iodine rich soil will have iodine, but good luck identifying that. I use iodized salt because I don't love the alternatives.