As a result of decreased iodine status, due to the typical Western diet, sufficient thyroxine cannot be produced, negatively impacting thyroid function. The use of oral iodine/iodide can aid in circumventing this issue. Published information suggests iodine/iodide helps to maintain healthy hydroxyl estrogen ratios as well. Only practitioners who are authorized to order blood work may order this product. If you are not authorized, this product will not ship to you.