Iodine is an essential element needed for proper thyroid function. In some thyroid disease cases however, iodine supplementation may be contraindicated (risks involved).
Many companies that manufacture supplements advertised to boost thyroid function often place high levels of iodine content in them or include ingredients that are rich in iodine, such as kelp (seaweed-algae). While reasonable levels of iodine intake is healthy for people with non-diseased thyroid glands, it can have adverse effects in some cases ...