Your liver could be aging faster than your heart. Your gut, faster than your skin. What if the meal on your plate right now was quietly rewriting your biological clock? Doctors are calling it a "clear and compelling corrective to Silicon Valley longevity hype." Nutrition experts call it "fascinating." The Independent says it proves what matters most is simply "what you put on your plate." This companion guide breaks down David Cox's bestselling investigation into the science of food and aging, the damage-repair balance inside your cells, and why your next bite might matter more than you think. It's fast, clear, and built for readers who want the key ideas now. This is a summary and analysis, not the original book. Read it here, then get the full story from Cox himself.