The element essential for the formation of thyroid hormones is iodine. Iodine is crucial for synthesizing the two primary thyroid hormones: thyroxine (T4) and triiodothyronine (T3). These hormones regulate numerous physiological processes in the body, including metabolism, growth, and development. A deficiency in iodine can lead to thyroid-related health issues, such as goiter and hypothyroidism. To ensure adequate iodine intake, it is often added to table salt, known as iodized salt, and can be found in various foods, especially seafood, dairy products, and some grains. Maintaining proper iodine levels is vital for overall health and wellbeing.