From an acclaimed Harvard professor and one of Time’s most influential people, this paradigm-shifting book shows how almost everything we think we know about aging is wrong, offers a front-row seat to the amazing global effort to slow, stop, and reverse aging, and calls readers to consider a future where aging can be treated.

For decades, experts have believed that we are at the mercy of our genes, and that natural damage to our genes—the kind that inevitably happens as we...