New Zealand soil is naturally low in iodine, so by law iodine is added to certain foods (e.g. salt, bread): https://www.mpi.govt.nz/food-safety-home/nutrients-

New Zealand soil is naturally low in iodine, so by law iodine is added to certain foods (e.g. salt, bread): https://www.mpi.govt.nz/food-safety-home/nutrients-added-food/iodine-added-food/ https://www.mpi.govt.nz/food-safety-home/nutrients-added-foo...