sea salt, and Himalayan salt—just to name a few. But while all these salts contain sodium, only one—table salt—has been fortified with iodine, an essential nutrient. The practice of iodizing ...

Kosher salt doesn't have iodine, though, so make sure you get what you need elsewhere, like dairy products (a cup of nonfat Greek yogurt has 116 mcg, notes Passarrello), eggs, and seafood.

Alternatives like sea salt or pink Himalayan salt tend not to contain iodine. Processed foods – the source of an ever-increasing majority of the salt in people's diets – are generally free of ...