When the book Paleo for Life: Superfoods to Slow Aging, Boost Longevity, and Enhance Your Well-Being hit shelves this fall, many readers recognized the high-profile name on the cover: Loren Cordain, the pioneering scientist behind the original Paleo Diet. But those who know the project’s inner workings say the book would not exist in its current form without the deep involvement of co-author Dr. Mark J. Smith, the long-time physiologist, coach, and clinician whose own journey with Paleolithic nutrition dates back more than three decades.
Smith, who runs a sports performance and nutrition practice at Mission Hills Country Club in Rancho Mirage, is well known in Southern California’s athletic circles. Golfers, tennis players, and active adults seek him out for his expertise in high-intensity interval training, injury-resistant conditioning, and nutrition strategies tailored to real-world lifestyles. His reputation extends far beyond Greater Palm Springs: he is a member of the Titleist Performance Institute (TPI) Advisory Board, a TPI Certified Level 3 Fitness Coach, and a three-time Golf Digest “Best Golf-Fitness Trainers in America” honoree.
What many don’t realize is that Smith was also the first graduate student to study with Cordain at Colorado State University in the late 1980s. That connection set the stage for a partnership spanning research, presentations, client education, and authorship that helped turn Paleo for Life from a promising idea into a comprehensive guide for anyone seeking practical, science-backed habits to support longevity.
A Book Years in the Making
The origin of Paleo for Life goes back several years, when Cordain began outlining concepts he felt were missing from his earlier works. As his health declined due to a genetic condition, he invited Smith and another former student, Trevor Connor, to help expand and refine the ideas. What started as informal weekly research calls gradually evolved into a full collaborative effort that included scientific review, updated nutritional analysis, and new writing.
Over the course of 2023 and 2024, Smith took on a central role. He updated the scientific literature for each chapter, contributed major sections of the writing, and helped ensure that the book maintained both clarity and scientific integrity. The final result combines Cordain’s foundational ideas with fresh research, real-world clinical insights, and practical tools – including a two-week meal plan and more than 50 recipes – to help readers put the concepts into action.
Though Cordain remains the main author, both Smith and Connor are recognized co-authors who, in Smith’s words, “became full-blown authors essentially” as the project progressed.
Linking Nutrition, Performance, and Longevity
The book’s focus on “superfoods” for healthy aging reflects the questions Smith has explored throughout his career. At Mission Hills Country Club, he has guided hundreds of clients, many referred by local physicians, through nutrition and training programs grounded in Paleolithic principles. His approach is consistent: simple, science-based food choices paired with movement, recovery, and lifestyle habits that match how the human body is built to function.
Clients come to him seeking more energy, better performance, or relief from chronic issues. Many stay because the changes they experience are measurable and lasting. That hands-on experience influenced the book’s practical tone and its emphasis on achievable routines. As Smith puts it, the goal is not just to help people live longer but to “live well for a long time.”
A Partnership Built on Science and Trust
Smith’s relationship with Cordain is woven throughout the story of Paleo for Life. The two first met in 1988, when Smith arrived at Colorado State University as a young graduate student from the UK. He became Cordain’s first student to explore Paleolithic nutrition academically, long before the Paleo Diet became a bestseller. Over the years, they remained close colleagues, meeting regularly to review new research and refine ideas.
That long arc of collaboration made Smith uniquely positioned to help Cordain carry the project across the finish line. The trust built over decades allowed Smith and Connor to preserve Cordain’s voice and scientific vision while strengthening the book with current evidence and accessible explanations.
From Mission Hills to Readers Everywhere
The release of Paleo for Life has been met with enthusiasm, with early demand pushing some retailers to place backorders. For Smith, the book is an extension of the work he does every day at Mission Hills Country Club: helping people perform better, feel better, and move toward a healthier future using clear, proven principles.
Smith views his role as both a responsibility and an honor: an opportunity to support his longtime mentor and to provide valuable, actionable information to the public.
For desert residents, that expertise is close to home. Smith continues to work with golfers, racquet-sport athletes, and active adults at Mission Hills, offering individualized coaching and nutrition guidance rooted in the same principles found in the book.
As a coach, educator, and now co-author, Dr. Mark Smith has spent more than 30 years helping people understand not just what to do for their health, but why it works. Paleo for Life captures that spirit – clear, practical, and grounded in research – and brings it to a much wider audience.
