The Longevity Project: Surprising Discoveries for Health and Long Life from the Landmark Eight-Decade Study. The book is interesting to me because it describes a famous example of longitudinal social research study.
Here is the book description: In this illuminating addition to the burgeoning bookshelf on longevity, UC-Riverside health researchers Friedman and Martin draw on an eight-decade-long Stanford University study of 1,500 people to find surprising lessons about who lives a long, healthy life and why. The authors learned, for example, that people don't die simply from working long hours or from stress, that marriage is no golden ticket to old age, and the happy-all-the-time types may peter out before the serious plodders. If there's a secret to old age, the authors find, it's living conscientiously and bringing forethought, planning, and perseverance to one's professional and personal life. Individual life stories show how different people find the right balance in different ways, depending on their personalities and social situations. Lively despite the huge volume of material from 80 years of study, and packed with eye-opening self-assessment tests, this book says there's no magic pill, but does offer a generous dose of hope: even if life deals you a less than perfect hand, you're not doomed to an early demise if you live with purpose and make connections with the people around you