How does iodine deficiency manifest itself?
Research work has shown that iodine deficiency in the thyroid presents as a thyroid goiter (enlargement of the thyroid). In those areas of the world where iodine deficiency is very high, such as in Switzerland and in certain areas of Asia and Africa, there are also higher incidents of thyroid cancer. Iodine is also concentrated by breast tissue, and a lack of iodine in the breasts manifests as fibrocystic breast disease (painful breasts with nodules and cysts and often more symptomatic prior to menstrual periods). 93% of American women have fibrocystic breast disease and the longer this disease exists, the higher the potential risk for development of breast cancer. 20% of all iodine in the human body is stored in the skin, specifically in the sweat glands. Lack of iodine in the sweat glands manifests as dry skin with a decreased ability to sweat. Iodine can also be concentrated in the stomach tissue, and the lack of iodine in the stomach manifests as achlorhydria (lack of digestive aci