» Cognitive Enhancement Research Institute    Features articles and interviews about the use of vitamins and supplements in managing the condition.    http://www.ceri.com/downhome.htm

» Targeted Nutritional Intervention (TNI) in the Treatment of Children and Adults with Down Syndrome    Scientific article explains the principles behind its use, and includes treatment protocols, and an expanded bibliography.    http://www.lleichtman.org/tni.shtml

» The Ragans Targeted Nutritional Intervention Site    Includes parent testimonials and links to research articles.    http://members.aol.com/TheRagans