Iodine is an essential mineral. Your body needs it to function properly but cannot make it on its own. Instead, you need to consume it.
Most people get all the iodine they need from food. It’s mainly present in foods such as fish, seaweed, and dairy. It’s widely available in the form of iodized salt. It also exists in the Earth’s soil, but the content varies from one area to the next. As such, the iodine content of produce varies.