Iodine

• Essential for the synthesis of the thyroid hormones (triiodothyronine and thyroxine) which are required for the normal growth and development of young mammals, including humans.
• Involved (as elemental iodine) in the modulation of estrogen action on breast tissue.
• Health benefits: Adequate daily intake prevents hypothyroidism (the development of an enlarged thyroid gland, usually referred to as goiter), promotes healthy hair, nails, skin and teeth.
• Best food sources: seafoods, onions, vegetables grown in iodine-rich soil.