This nutraceutical provides minerals that support normal energy levels, metabolism, and natural hormone production. The thyroid gland takes the iodine we ingest and converts it into two hormones—thyroxine (T4) and triiodothyronine (T3). T4 and T3 regulate our body's metabolism of proteins, fats, and carbohydrates. Every cell in our body depends on T4 and T3. Moreover, iodine supports healthy breast tissue by up-regulating proteins involved in estrogen metabolism.