your wife should rethink - introducing a large amount of an essential nutrient had a large effect on her. seems the missing Iodine was important, does it not? i mean, its not she overdosed or anything. the human body can handle grams of Iodine (in iodide) every day and do great. she obviously has underlying problems, and not trivial ones at that.
as for the tinnitus, Iodine makes everything work better. the senses can better pick up things we ignored before from senses being dulled. true of body processes too. i have found that most people dont even know what healthy feels like. yea its different, and different scares people.
iodine is good on the skin. makes me wonder just how much iodine we were exposed to in the ancient past. quite a lot, i would surmise at this point.