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What is Iodine?
Iodine is a trace mineral that the body cannot produce on its own. It is the essential building block of thyroid hormones T3 and T4, which regulate metabolism, body temperature, energy production, and brain development. Modern Western diets, particularly those low in iodized salt, seafood, and dairy, can fall short of the 150 mcg daily recommendation. Mild deficiency may contribute to low energy, sluggish metabolism, and cognitive fog. Kelp-derived iodine is the most common natural form. People with thyroid conditions or on thyroid medication should consult a clinician before supplementing, as both deficiency and excess can disrupt thyroid function.
Essential building block of thyroid hormones. Modern diets low in seafood and iodized salt may fall short.
Natural food sources
Where possible, get Iodine from whole foods first. Common dietary sources include:
Common questions
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