Hi, I have been taking Iodine I worked up to 100mg per day but I got freaked out because My vision became blurry and I felt like I had dementia.( I'm 48).I have gone down to 12.5mg per day, Not being able to recall small things is scary. I have been very tired as long as I can remember and doctors are no help. I have never had much of a memory at all but it scared me. Should I take less?