3MCQUEEN3 - That's excellent that you've had such a positive result with the iodine, well done! Thanks for posting all that fascinating information. Did your chiropractor do any blood tests to determine your iodine levels or question you about things like dry skin, fatigue, muscle cramps, your digestion? Iodine deficiency is more common in women than in men and low iodine levels can cause hair loss, ovarian cysts, weight gain and infertility so it's not a bad idea. The RDI is a standing joke amongst many nutritionists (I am one - clinical and orthomolecular, though I don't practise anymore) as the values are so low, but basically it was designed to indicate the minimum amount necessary to avoid clinical deficiency, rather than the optimal amount to ensure health and vitality, so you can often safely supplement with a huge multiple of the RDI for specific reasons in orthomolecular nutrition. I am glad you are doing this under the direction of your chiropractor - it is very important when using orthomolecular nutrition (high therapeutic doses) to know what you are doing.
I totally second Nyxwolfwalker's comments about allergy - Iodine allergy is lifethreatening anyone with an allergy to seafood, especially shellfish or who has had an allergy to the contrast injection used for CT scans should be very careful.
As SweetSunshine mentioned, iodine is involved in thyroid function, and it's also necessary for the normal development, growth and function of the brain and body as well as having a strong influence on various metabolic processes including body temperature regulation.
You can always tweak your nutritional intake by including foods which contain the nutrient rather than resorting to supplementation. This is definitely a better way to go if you want to start immediately but haven't got a practitioner to advise you. Foods which contain iodine include seafood especially cod, sea bass, haddock and perch, kelp, dairy products and to a varying degree some plants which are grown in soils which are rich in iodine. Oh it's also added to table salt in a lot of countries, which has greatly reduced the rate of severe iodine deficiency in countries such as the UK, US and Australia.