Sea salt does not naturally contain a significant enough amount of iodine to sustain human dietary needs. Most table salt is iodized, however many people question its health effects because of how processed it is. The best option is to purchase iodized sea salt, which is not common.
A diet low in processed foods has many benefits, but this can cause some people to develop an iodine deficiency. The effects of low iodine can be detrimental, including weight gain, depression and other mental disorders. The issue of iodine deficiency in society has only started becoming a problem recently, mostly because of the rising popularity of sea salt, which, as opposed to the previously used table salt, does not contain enough iodine to sustain human health needs.