Kelp is more than 20% minerals by weight but the  Thyroid Rescue 911 Review   most significant trace element in kelp in relation to thyroid function is iodine. For the thyroid gland to be able to produce adequate amounts of thyroxine, about 50 milligrams of iodine is required. This iodine is taken in by the body in the form of iodides, which are then either excreted by the kidneys or used by the thyroid gland to produce the hormones thyroxine and triiodothyronine. These hormones can raise the body's metabolic rates significantly with just a slight increase in amount. For this reason, several mechanisms act to maintain the balance of these hormones in the body.

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