Alas, Gifford does not give us the secret access to the fountain of youth. The ultimate takeaway from the book is that longevity is often a bit of a crapshoot. You're either born with the right genes or you're not. And if you are lucky enough to be born with the right genes, you probably won't need much of the advice dispensed within the book.
But for the rest of us mortals, sadly, the advice, based upon the latest scientific research, is merely commonsensical, and already pretty widely disseminated. Namely, eat plenty of fruits and vegetables, limit your consumption of meat, avoid processed foods,-but as Pollen warns us, don't eat too much. Exercise regularly, and occasionally vigorously. Get enough sleep. Avoid gaining middle aged weight creep, especially around one's middle. An occasional fast may, in fact, be life extending. Try to keep a positive attitude. Socialize.
Ho-hum, huh? Not really, mainly because Gifford writes in such a breezy, lucid style, and is so funny, that I often found myself laughing out loud. So for people current regarding the latest lifestyle/nutritional advice, nothing contained within this book is going to turn your world upside down. But the book is such a pleasure to read, it may serve to bolster your commitment to healthy (or healthier) living. It did mine.