selenium and thyroid hormone

Selenium is an essential mineral that plays a critical role in supporting the production and function of thyroid hormones. The thyroid gland, located in your neck, uses iodine to produce hormones like thyroxine (T4) and triiodothyronine (T3), which regulate metabolism. Selenium acts as a cofactor for enzymes that convert T4 into the more active T3 and helps protect the thyroid from oxidative damage. Adequate selenium levels are important for maintaining healthy thyroid function, but both deficiency and excess can cause problems. Overall, selenium supports the balanced production and activity of thyroid hormones, essential for energy, growth, and development.