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