What mineral is essential for the production of thyroid hormones?

Iodine is the mineral that is essential for the production of thyroid hormones. The thyroid gland specifically utilizes iodine to synthesize thyroxine (T4) and triiodothyronine (T3), which are critical hormones that regulate various metabolic processes in the body. A sufficient intake of iodine is necessary to maintain healthy thyroid function and prevent disorders such as goiter, which can result from iodine deficiency.

In contrast, while zinc and iron play important roles in various physiological functions, they are not directly involved in the synthesis of thyroid hormones. Zinc is crucial for immune function, protein synthesis, and wound healing, while iron is essential for oxygen transport in the blood. Calcium primarily contributes to bone health and muscle function, rather than thyroid hormone production. Therefore, iodine stands out as the key mineral required for the synthesis of thyroid hormones.