About
Mark Sisson is a former elite endurance athlete (2:18 marathon, 4th place Hawaii Ironman) turned health and fitness author. He founded Mark's Daily Apple, one of the most visited health blogs, and created the Primal Blueprint lifestyle framework.
His approach combines evolutionary biology with modern nutrition science, emphasizing ancestral eating patterns, movement, sleep, and sun exposure. He later evolved his framework to incorporate ketogenic principles, coining "Keto Reset" and writing extensively on metabolic flexibility.
Sisson founded Primal Kitchen, a food company focused on healthy fats and clean ingredients, which was acquired by Kraft Heinz in 2019. He continues to write, podcast, and advocate for ancestral health approaches.
Areas of Expertise
Notable Work
The Primal Blueprint (book)
The Keto Reset Diet (book)
Mark's Daily Apple blog
Primal Kitchen (company)