In Canada and the US, Iodine Deficiency has not been officially recognized since the introduction of iodized table salt, however for various reasons - one of them being that some people just don't use any table salt - a large percentage of the population benefits from supplementing iodine in addition to whatever amounts they get from dietary sources. In fact, most individuals who are routinely put on medications for hypothyroid conditions could normalize their thyroid by simply supplementing extra iodine, instead of taking thyroid medications... Full Text