This week, I’m excited to welcomeAlan Gravesto the podcast. Alan is the CEO of DoNotAge.org., a health research organization on a mission to extend the healthy lifespan for as many people as possible. In this episode, we discover why we age, everyday practices that could be accelerating our aging, and strategies to slow down the clock. Over to Alan. Some questions asked during this episode: What is the difference between biological age and calendar age and how can we test for this? What are the most common practices you see the public doing that accelerates ageing? How do sirtuins play a role in longevity?