| Person | Type | Job | Role(s) |
|---|---|---|---|
 C.J. Hunt | Crew | Directing | Director, Executive Producer, Writer |
 Jason Marraccini | Crew | Production | Producer |
George Thompson | Crew | Production | Executive Producer |
Jason Sirotin | Crew | Production | Supervising Producer |
Trey Gregory | Crew | Production | Producer |
 Andrew Weil | Cast | Actor | Self / Director, Center for Integrative Medicine, U.Arizona |
C.J. Hunt | Cast | Actor | Self / Narrator / Main Subject |
 Kelly Ripa | Cast | Actress | Self / Talk Show Host |
 Gary Taubes | Cast | Actor | Self / Science Journalist / Author, Good Calories Bad Calories |
Joel Fuhrman | Cast | Self / Center for Nutritional Medicine | |
 Michelle Obama | Cast | Actress | Self / First Lady |
David J. Getoff | Cast | Self / VP Price-Pottenger Nutrition Foundation | |
Susan Loraine Anderson | Cast | Runner | |
Leslie Aiello | Cast | Self / President, Wenner-Gren Foundation for Anth. Research | |
Alan Goldhamer | Cast | Self / President, Int'l Association of Hygienic Physicians | |
Sally Fallon Morell | Cast | Self / President, Weston A. Price Foundation | |
Jean Jacques Hublin | Cast | Self / Dir., Human Evolution, Max Planck Institute | |
Adele Hite MPH R.D. | Cast | Self / Exec. Dir., Healthy Nation Coalition | |
Lane Sebring, M.D. | Cast | Self / Board Examiner, American Academy of Anti-Aging Medicine | |
Professor Mike Richards | Cast | Self / Head, Archaeological Science Group, Max Planck Institute | |
Barry Sears, Ph.D. | Cast | Self / Author / President, Inflammation Research Foundation | |
Jay Wortman, M.D. | Cast | Self / Métis Physician / Sr. Health Advisor | |
Shannon McPherron | Cast | Self / Paleolithic Archaeologist, Max Planck Institute | |
Ben Lamm | Cast | Young C.J. Hunt | |
Boyd Eaton | Cast | Self / Author, Paleolithic Prescription / Professor, Emory U. | |
Kylie Wurl, R.D. | Cast | Self / Registered Dietician, Sebring Clinic | |
Maria Leung | Cast | Self / Founder Tasty Eats Soy Jerky | |
Robb Wolf | Cast | Self / Author / Former Research Biochemist | |
Loren Cordain | Cast | Self / Author / Professor of Health & Exercise Science, CO St. U | |
 Michael Eades | Cast | Actor | Self / Author, Protein Power |
Shelia P. Norton | Cast | EMT 1 | |
Dr. Marie Soressi | Cast | Self / Max Planck Institute for Evolutionary Anthropology | |
William Rendu | Cast | Self / PhD Anthropology Student | |
Clay David | Cast | EMT 2 | |
Gary J. Sawyer | Cast | Self / Physical Anthropologist, American Museum of Nat. History | |
| Person | Type | Job | Role(s) |
