Which mineral is important for thyroid function?

Iodine is essential for thyroid function because it is a key component of the thyroid hormones, such as thyroxine (T4) and triiodothyronine (T3). These hormones regulate a variety of metabolic processes, including growth, development, and energy metabolism in the body. A deficiency in iodine can lead to hypothyroidism, characterized by an underactive thyroid, which can result in symptoms such as fatigue, weight gain, and developmental issues in children.

While calcium, sodium, and potassium are important minerals for various bodily functions—such as maintaining bone health, fluid balance, and muscle function—they do not play a direct role in the synthesis and regulation of thyroid hormones. This makes iodine uniquely critical for maintaining proper thyroid health and overall metabolic function.