What is the recommended amount of iodine for humans?
Iodine in biology
Natural sources of iodine include many marine organisms, such as kelp and certain seafood products, as well as plants grown on iodine-rich soil.[23][24] Iodized salt is fortified with iodine.[24] According to a Food Fortification Initiative 2016 report, 130 countries have mandatory iodine fortification of salt and an additional 10 have voluntary fortification.