Thyroid Nutrients

Adequate selenium supports glutathione peroxidase, which clears hydrogen peroxide and helps prevent oxidative thyroid damage. Selenium is required for deiodinase enzymes that convert T4 into T3. Zinc supports TRH signaling, T4-to-T3 conversion, and thyroid receptor binding. Iodine is required to make thyroid hormones and is highly concentrated in the thyroid. Iodine supplementation requires caution in Hashimoto’s because it can intensify oxidative stress and antibody activity if selenium and autoimmunity are not controlled. Low selenium, zinc, and iodine intake undermines multiple thyroid processes.