Iodine requirements

Often when I'm studying, I come across things that kind of amaze me. Did you know that you only need 1 teaspoon of iodine in your lifetime? Really...that's it. The problem is that your body can't really store it so you have to have a little bit every day. I'm still amazed...iodine deficiency is the single most common cause of preventable mental retardation and brain damage and all we need is less than a teaspoon...