Be careful about too much of a good thing. A few months ago there was a discussion in CZ about adverse reactions to high dose iodine. I was surprised at the large number of people who reported unpleasant side effects from high doses.
I've never tried many mg doses of Iodine but I tolerate small doses just fine.
Also I take at least 200mcg of Selenium daily. It has a history of warming my cold hands and helps a bit with motivation/lethargy.
After a round of Cutler protocol heavy metal detox I take extra Se to help with mop up of the mobilized metals, maybe 350mg in the 24 hrs after the last dose.
Have you ever heard of using calcium in milk to reduce the amount of fluoride that is absorbed from the gut?
Dr. D. Robbins in his book, The Toxic Dental Office, writes, "Should the child swallow too much fluoride during the [topical fluoride] procedure, the dentist is supposed to insure the child immediately drinks milk or antacids in a liquid or gel formulation. The calcium in these products binds the excess fluoride in the stomach and prevents it from being absorbed by the gastrointestinal system....calcium and fluoride bind so tightly within the cellular structure of the body, the calcium cannot be available for bone growth, muscle formation, and nerve conduction." p 188-9.
I like hair tests when looking for clues about potential problems but I'm hesitant to base supplement dosing entirely on them.
A. Cutler has a theory that mercury and other H Metals affect movement--"transport"--of minerals in the body and into hair. Once this "derangement" of mineral transport is bad enough he no longer trusts that levels in hair accurately reflect levels in the body. An early version of his theory is in this discussion with a noted DAN!/Autism doctor. http://onibasu.com/archives/am/2200.html