Iodine is an essential mineral that offers numerous health benefits and plays a crucial role in the body. Some of the benefits of iodine include:

1. Thyroid Function: Iodine is a key component of thyroid hormones, which regulate metabolism, growth, and energy production^[1].
2. Brain Development: Adequate iodine levels are essential during pregnancy and early childhood for proper brain development and cognitive function^[2].
3. Immune System Support: Iodine is important for immune system function and helps the body fight off infections^[3].
4. Regulation of Metabolism: Thyroid hormones, which require iodine, help regulate metabolism and maintain energy levels^[4].

Signs of iodine deficiency can include:

1. Enlarged Thyroid (Goiter): An early sign of iodine deficiency is the enlargement of the thyroid gland in the neck, known as a goiter^[5].
2. Fatigue and Weakness: Insufficient iodine levels can lead to low energy levels, fatigue, and weakness due to thyroid hormone imbalances^[6].
3. Impaired Cognitive Function: Severe iodine deficiency, especially during pregnancy and infancy, can lead to cognitive impairments and delays^[7].

To prevent iodine deficiency and access the health benefits of iodine, it is important to consume iodine-rich foods such as seafood, dairy products, and iodized salt^[8].