One of the most important uses of iodine is prevention of thyroid problems as iodine is a vital mineral for our body which is necessary for the synthesis of thyroid hormones.Iodine, in form of silver iodide is used in photography.Here, are some more uses of iodine related to the human body, medical uses and some other uses. Uses of Iodine. Prevention of Goiter: Lack of iodine causes goiter (abnormal expansion of the thyroid gland).odine, in form of silver iodide is used in photography. Here, are some more uses of iodine related to the human body, medical uses and some other uses. Uses of Iodine. Prevention of Goiter: Lack of iodine causes goiter (abnormal expansion of the thyroid gland).