Which nutrient is important for thyroid function?

The nutrient that plays a crucial role in thyroid function is iodine. The thyroid gland requires iodine to produce the hormones thyroxine (T4) and triiodothyronine (T3), which are essential for regulating metabolism, growth, and development. Iodine deficiency can lead to thyroid-related issues such as goiter and hypothyroidism, highlighting its importance in maintaining overall thyroid health.

While selenium does support thyroid function by playing a role in the conversion of T4 into the more active T3 form and has antioxidant properties that protect the thyroid gland, iodine is the primary nutrient needed for the synthesis of thyroid hormones. Therefore, in the context of nutrients essential for thyroid function, iodine is the most critical one.