Duncan Smart

Duncan Smart is an international endurance athlete and the author of Ancestral Health, Carnivore: The Manual, Blood & Bone, and Metabolic Sovereignty. He writes and teaches a practical, science-based approach to metabolic health rooted in ancestral principles... cutting through modern nutrition noise with clarity and disciplined simplicity.

A former mathematics teacher, Duncan began researching endurance performance and, in the process, returned to the fundamentals that move the needle: real food, fasting, recovery, light, and rhythm. Through meat-based nutrition and foundational lifestyle practices, he experienced firsthand how simple inputs can transform energy, focus, and resilience. He holds a BA (Hons) and a PGCE in Mathematics, bringing academic precision to his exploration of metabolism, mindset, and self-reliance.

Based in North Yorkshire, UK, Duncan trains, writes, and helps others rebuild the human baseline through real-world practice and measurable results. He has appeared in television interviews and has made numerous guest appearances on health and performance podcasts. He also writes in the wider field of metaphysical thought and personal development, reflecting his interest in mindset, meaning, and the deeper layers of human experience.