Lifespan: Why We Age--And Why We Don't Have toA NEW YORK TIMES BESTSELLER "Brilliant and enthralling." The Wall Street Journal A paradigm shifting book from an acclaimed Harvard Medical School scientist and one of Time's most influential people. It's a seemingly undeniable truth that aging is inevitable. But what if everything we've been taught to believe about aging is wrong? What if we could choose our lifespan? In this groundbreaking book, Dr. David Sinclair, leading world authority on