If your body already has powerful systems designed to repair and protect you, are your daily habits helping switch them on… or working against them?
On today’s episode, Dr. Valter Longo, professor and director of the Longevity Institute at USC, one of the world’s leading researchers on aging, nutrition, and lifespan, and author of The Longevity Diet and Fasting Cancer, joins Mike for his first conversation on Finding Mastery. Longo’s path into this work began far from a lab. He was a jazz performance major chasing rock guitar, until a question that had lived in him since childhood pulled him toward aging instead: what if little things can make a big difference?
At the center of the conversation is a trade-off most of us rarely think about. The body can invest its energy in growth and reproduction, or in protection and repair, but not both at once. From that idea, Longo challenges one of the loudest narratives in health today: the push for high protein. He lays out why he believes most people are eating far more than the evidence supports, and what a safer, mostly plant-based balance looks like across a lifetime.
From there, Mike and Longo move into the work he’s best known for: fasting-mimicking diets, why he says fasting on its own doesn’t mean anything, and how cycles of eating less may switch on the body’s own repair and regeneration. They explore what this could mean for cancer, where Longo is careful and precise about what the science does and doesn’t yet show. Mike opens up about how this conversation pushed hard against a protein narrative he’d carried his whole life, and why he wanted to have it anyway.
In this conversation, we explore:
- Why aging and cancer are deeply connected
- The trade-off between growth and protection that shapes how we age
- Why Longo believes most people eat far too much protein
- What a safer, mostly plant-based protein balance looks like
- Why fasting on its own is a meaningless word, and what to do instead
- How fasting-mimicking cycles may trigger the body’s repair and regeneration
- What it takes to unlearn a belief when the evidence stops holding up
If you’ve ever wondered whether your daily choices are quietly helping or hurting the systems meant to keep you well, this conversation offers a science-backed place to start thinking about your health and lifestyle.
A note from the team: This episode doesn’t exist in a vacuum. Over the last several months, Mike has had numerous conversations on health, nutrition with world-renowned experts like Dr. Gabrielle Lyon, Dr. Jason Fung, and Dr. Tim Spector, among others. These are all rich conversations that at times hold conflicting advice and guidance. We encourage you to listen to all of them, and as always, consult your doctor on what practices are best for you. Health, nutrition, and longevity are all deeply intertwined with living a life of full potential, and we’re committed to having these great conversations with world experts on these subjects. Keep commenting with what’s working in your life, keep passing these onto your friends, and as always keep pushing the frontiers of your own performance!
“…cancer and aging go together. And so by treating aging, you’re also preventing cancer.” — Dr. Valter Longo
Resources + Links
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