This anon has taken iodine. Lugol's Solution. Heard about it from D.C. Jarvis' books. Interesting thing about it is that in this group of halides, the weaker ones negate the stronger. Iodine is the strongest. Among the weaker are fluoride and chloride. No iodine in our soil and we're ingesting substances that negate it. Just enough in salt to stop goiter but not enough to help the body otherwise. Iodine–important.