The salt used in processed and prepared foods usually isn't iodized, contributing to declining iodine intake given the increasing consumption of these foods.
industrially farmed cattle are often fed iodized salt, which can make their dairy products a good source of iodine. depends on the farm's practices though
Good point. I'd hope that there are other sources of iodine than salt in regions that have higher iodine content -- after all, salt was just the vehicle chosen for the supplement. But I can also see what you say about prepared foods.
