If you go to Easter Island (Rapa Nui), you may become smarter, happier and less anxious:
http://www.sciencedaily.com/releases...0629211902.htm
"ScienceDaily (June 29, 2012) — Cognitive skills such as learning and memory diminish with age in everyone, and the drop-off is steepest in Alzheimer's disease. Texas scientists seeking a way to prevent this decline reported exciting results this week with a drug that has Polynesian roots...."