This episode is brought to you by Rupa Health, Kettle & Fire, HigherDOSE, and AlgaeCal. Skeletal muscle is a widely overlooked part of our metabolic health. One of the most important factors for how much muscle we create and retain is our protein intake, which has become a divisive topic in the nutrition world and one still hotly debated in some dietary camps. My guest on today’s podcast, Dr. Gabrielle Lyon, is the perfect person to sort through the facts about skeletal muscle and how to consume protein for optimal impact.  Dr. Gabrielle Lyon is board-certified in family medicine and completed a combined research and clinical fellowship in geriatrics and nutritional sciences at Washington University in St. Louis. She completed her undergraduate training in nutritional sciences at the University of Illinois. Dr. Lyon is a subject-matter expert and educator in the practical application of protein types and levels for health, performance, aging, and disease prevention. She has continued to receive mentorship from Dr. Donald Layman, Ph.D., over the course of two decades to help bring protein metabolism and nutrition from the bench to the bedside.  This episode is brought to you by Rupa Health, Kettle & Fire, HigherDOSE, and AlgaeCal. Access more than 3,000 specialty lab tests with Rupa Health. You can check out a free, live demo with a Q&A or create an account at RupaHealth.com today. Head over to kettleandfire.com/Hyman today to see all of their products and use code HYMAN to save 20% off your entire order. Elevate your wellness game today by going to HigherDOSE.com. You can use promo code HYMAN at checkout or just go to HigherDOSE.com/hyman to save 15% off site-wide. Right now, you can get 10% off AlgaeCal calcium supplements when you go to algaecal.com/markhyman and use coupon code MARKHYMAN. Here are more details from our interview (audio version / Apple Subscriber version): Why America’s obesity crisis is really a muscle crisis (4:01 / 2:40) How skeletal muscle has been overlooked in medicine (6:42 / 5:05)  What muscle does and why it’s so critical (10:11 / 8:22)  Muscle loss and aging (16:19 / 15:46)  There’s no such thing as a healthy sedentary person (18:49 / 17:29)  Prioritizing dietary protein to improve your health and body composition (27:49 / 25:26)   How much protein and what types should we eat? (32:06 / 28:50)  Can you be a healthy vegan, and is meat good or bad for us? (43:09 / 40:00)  Protein intake as you age (50:38 / 47:10)  The best types of exercise to build muscle (1:05:59 / 1:02:18)  Learn more at drgabriellelyon.com. Get a copy of Forever Strong: A New, Science-Based Strategy for Aging Well.