This website offers data on the iodine nutrition in each country, and also information about IDD in general, including technical information. IGN has Regional Coordinators and representatives in many countries who can help. UNICEF and WHO have nutrition experts in countries and at their central offices.
For more details on thyroid disease, including iodine deficiency, an excellent online textbook can be found at www.thyroidmanager.org. If you have additional questions, please contact IGN through its Regional Coordinators or the Executive Director