By Dr. Mercola
Iodine is essential to your health. Unfortunately, data collected by the U.S. National Health and Nutrition Examination Survey has revealed a significant drop in median urine iodine values.1 The median iodine level measured in urine samples was 320 micrograms per liter (mcg/L) between 1971 and 1974. By 1988, it dropped to 145 mcg/L. Surveys taken in the years since show levels have stabilized, except in pregnant women whose median urine level dropped further to 125 mcg/L.
Many people don’t know they need to consume a little iodine each day to maintain healthy levels of this essential micronutrient. Your body uses iodine across several organ systems, but it is most commonly known to synthesize thyroid hormones that regulate nearly every bodily system. Several thyroid hormones secreted by your thyroid gland are transported throughout your body where they control your metabolism and energy production.2
This means that every cell in your body depends on the production and function of thyroid hormones. Your thyroid gland is under the control of your pituitary gland that is located at the base of your brain. In turn, the pituitary gland is under the control of your hypothalamus. In other words, there are several steps needed to identify low thyroid hormone levels and to tell your thyroid gland to begin secreting more.
A recent study published in the British Journal of Nutrition3 evaluated the iodine levels of cow’s milk and milk alternatives in search of a potential reason for this growing iodine insufficiency.
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Milk Substitutes Are Low in Iodine
Researchers from the University of Surrey…