Celebrity doctors and Silicon Valley billionaires have been promoting the so-called "longevity movement," promoting health trends that claim to extend your life. They claim by following strict diets, taking dozens of supplements per day and regular cold plunges they can extend their life well-past 100. But how much evidence is there behind these claims? And what do we actually know about healthy aging? To answer your questions about longevity, Just Asking spoke to two guests. Timothy is a professor and the research director of the Health Law Institute at the University of Alberta who studies health misinformation. Andy De Santis is a Registered Dietitian.