Of all the known elements so far to be essential for human health, iodine is most misunderstood and the most feared. Yet iodine is the safest of all the essential trace elements. It is the only one that can be administered safely for long periods of time to large numbers of patients in daily amounts as high as 100,000 times the RDA. (Brownstein) Iodine is apparently involved in every tissue of the body, and a deficiency will result in goiter, lowered vitality, lowered basal metabolism, inability to think clearly, and/or several other diminished health conditions. Iodine was found in the samples of stony corals tested at the level of 1.22 ppm. (Halstead) All sea vegetables are a rich source of iodine, especially kelp. (Thomas) Because of the high iodine content of sea water, marine vegetation, sea foods, and vegetables and fruits grown on the seaboard are particularly rich in this element. Iodine is of particular significance is connection the formation of thyroid hormone. (Cantarow and Schepartz) Iodine regulates the rate of metabolism, energy production, body weight and development of female reproduction glands. (Lepore)

David Brownstein, Iodine, Why You Need It; Why You Can’t Live Without It, page 9, ff.
Abraham Cantarow and Bernard Schepartz, Biochemistry, page 641, ff.
Bruce W. Halstead, Fossil Stony Coral Minerals pages 69-70.
Donald Lepore, The Ultimate Healing System, page 61-62.
Lalitha Thomas, 10 Essential Foods, 135-157.