Think of it this way, if you drink enough water every day, you will not become dehydrated and all the other hosts of problems that come with NOT drinking water!
Our bodies need iodine just as much as they need water!
Stop the iodine, and of course there are problems that will return.
Water, salts and iodine are necessary for human life - period. Can't do without ANY of them for very long! (Don't forget the sunshine!) ;-)