If you are looking for a Fountain of Youth, forget pills and diet supplements. Adventurer Dan Buettner has visited four spots on the globe where people live into their 90s and 100s and outlines how they add years of good life in his new book, "The Blue Zones." Buettner identifies four hot spots of longevity: the mountainous Barbagia region of Sardinia, an island off the coast of Italy; the Japanese island of Okinawa; a community of Seventh-day Adventists about 60 miles east of Los Angeles; and the Nicoya Peninsula of Costa Rica. What Buettner found in his seven years of research and travel were common denominators among the vigorous super-elderly. He distills them into what he calls the Power Nine that readers can use to create their own Blue Zone.
