WebMD: Iodine is a chemical element. The body needs iodine but cannot make it. The needed iodine must come from the diet. As a rule, there is very little iodine in food, unless it has been added during processing, which is now the case with salt. Most of the world’s iodine is found in the ocean, where it is concentrated by sea life, especially seaweed.

Linus Pauling Institute-OSU – Iodine ~ Iodine is a key component of thyroid hormones, which are required throughout life for normal growth, neurological development, and metabolism.

By Tina Kaczor, ND, FABNO

Iodine’s role in maintaining the health of breast tissue is suggested by its therapeutic effects on benign breast conditions. In a publication reviewing three clinical trials of varied designs, molecular iodine (I2) reduced fibrocystic signs/symptoms while iodide (I-) was less effective and affected thyroidal function more readily. In one of the trials included in that review, the dose of molecular iodine was 0.07 mg to 0.09 mg/kg body weight per day. Converting this to something more clinically useful, this is approximately 3.2 mg to 4.0 mg/100 lb body weight per day of molecular iodine (I2).

USANA – What is Iodine? ~ Iodine, a halogen element, has importance in human health as a component of the hormone thyroxine (produced by the human thyroid gland). Thyroxine is an important part of general metabolism regulation and normal fetal development.

Iodine deficiency can lead to an enlargement of the thyroid gland (e.g. goiter) and other related disorders. Severe maternal iodine deficiency during pregnancy can lead to fetal cretinism, a form of mental retardation. Less severe deficiencies during pregnancy can lead to lesser degrees of neurological damage, which generally manifest as poor cognitive performance and hearing impairment. These conditions are rare in the U.S. as iodine is easily accessible, especially from iodized salt.

Food sources of iodine include milk, bread, fish, various fruits and vegetables, and legumes.

Although cases of intolerance to iodine intakes of 2,000 mcg have been reported, humans can generally tolerate levels up to 10,000 mcg per day.


Insufficient iodine intake impairs the production of thyroid hormones, leading to a condition called hypothyroidism. Iodine deficiency results in a range of adverse health disorders with varying degrees of severity, from thyroid gland enlargement (goiter) to severe physical and mental retardation known as cretinism.

Iodine deficiency-induced hypothyroidism has adverse effects in all stages of development but is most damaging to the developing brain. Maternal iodine deficiency during pregnancy can result in maternal and fetal hypothyroidism, as well as miscarriage, preterm birth, and neurological impairments in offspring.

Iodine: The Complete Guide to Iodine Health Benefits

What Is Iodine?

~ Dr. Edward Group ~

A chemical element with the atomic number 53 and symbol I, iodine occurs as a purple-black solid or a purple vapor when a gas. It has 37 known isotopes, and all are radioactive except I-127, the form found in food and supplements. Iodine is a trace element because of its rarity. The human body requires iodine but does not produce it; hence it is also called an essential nutrient. This means people must eat foods high in iodine or take supplements to avoid iodine deficiency. The body uses iodine to create thyroid hormones, which affect brain development and function, metabolism, and other body processes.

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Athletes lose a lot of precious iodine through your sweat. Supplementation is clearly in order. Luckily, iodine, in the form of supplements, is pretty inexpensive. However, dosages per pill vary widely between manufacturers. Some companies supply the mineral in tiny, RDA-sized dosages of 150 micrograms, whereas others supply it in milligram-sized capsules. (The largest I found was 12.5 mg. per capsule.)

Unfortunately, it’s difficult to say how much you’d need to remedy a deficiency. Simply taking the RDA would be like refilling a bucket with water by adding one drop a day. A more functional approach would be to take between 6 mg. and 12 mg. for a period of weeks or months (up to three). As always, play it smart if you try the supplement approach. If you don’t think you have a deficiency, you might simply want to start keeping a shaker of iodized salt on the table.

~Content Source – T-Nation


OTHER NAME(S): Atomic number 53, Cadexomer Iodine, Diatomic Iodine, I2, Iode, Iode de Cadexomer, Iode Diatomique, Iode Moléculaire, Iode Mono-atomique, Iode de Povidone, Iode de Sodium, Iodide, Iodized Salt, Iodure, Iodure de Potassium, Iodure de Potassium en Solution Saturée, Iodure de Sodium, KI, Lugol’s Solution, Molecular Iodine, Monoatomic Iodine, Numéro atomique 53, Periodate de Sodium, Potassium Iodide, Povidone Iodine, Saturated Solution Potassium Iodide, Sel Iodé, Sodium Iodide, Sodium Iodine, Sodium Periodate, Solution de Lugol, SSKI, Yodo.