Mountains of research was reviewed to write this book. For that effort I added an additional star to the three I gave for the book itself. The three studies referenced in this book began before the author was born or when he was a youngster. Dr. Vaillant's participation with these projects began decades later. This data was fragmented and resided on many different mediums. He undertook the task of getting all the data compiled onto a hard drive. His next task was to correlate the data (which was not always consistent between the three studies) to form meaningful patterns about aging.
His book is an "attempt to offer models for how to live from retirement to past 80 with… Read more