Kelp seaweed tablets are rich in natural iodine for dietary supplementation. In certain latitudes, the population tends to consume little iodine because people rarely eat seafood. If non-iodized salt is used or if cooking is low in salt, the use of kelp (plant-bound iodine) is an ideal supplement. Iodine contributes to the normal functioning of the nervous system and supports the normal production of thyroid hormones as well as normal thyroid function.