Buettner is a longevity expert who has traveled around the world and talked with folks who have lived extraordinarily long lives – many over 100 years! He worked with both local and international experts to do a more formal study of the habits and traits that these long-lived folks exhibit. The results are useful for anyone who wishes to live a healthier, longer life. Social contact is vital, along with certain diets and exercise that have proved helpful time and again. Personal stories from all over the world make this lively and interesting reading.