Tanzania has, over the past decade, made good progress toward universal salt iodization, but the most recent information and data reported by the World Health Organization (WHO) and UNICEF, and published in the regular "scorecard" of progress by the Network for Sustained Iodine Nutrition (http://206.191.51.240/ Resources_Nutrition.htm), indicates that only 73.8% of households have access to iodized salt. Moreover, only 67% of the accessible salt is satisfactorily iodized to optimal levels. However, Tanzania has a functioning National Committee, appropriate legislation is in place, and a national officer responsible for salt iodization has been appointed. The country has also committed to assessing national progress in iodization coverage at least every five years. The study by Assey et al. confirms the well-known fact that populations living on islands or near seacoasts are not free from iodine-deficiency disorders. It has long been known that such populations are in need of daily intake of iodine. Nor are iodine-deficiency disorders limited to developing nations; they are a danger wherever iodine has been depleted from the soil. The most economic, efficient, and effective method of delivering iodine to the population every day in every village is via iodized salt.