 C.J. HuntSelf - Narrator | Self - Narrator |
| LLeslie AielloSelf - President, Wenner-Gren Foundation for Anth. Research | Self - President, Wenner-Gren Foundation for Anth. Research |
| LLoren CordainSelf - Author - Professor of Health & Exercise Science, CO St. U | Self - Author - Professor of Health & Exercise Science, CO St. U |
| MMichael EadesSelf - Author, Protein Power | Self - Author, Protein Power |
| BBoyd EatonSelf - Author, Paleolithic Prescription & Professor, Emory U. | Self - Author, Paleolithic Prescription & Professor, Emory U. |
| JJoel FuhrmanSelf - Center for Nutritional Medicine | Self - Center for Nutritional Medicine |
| DDavid J. GetoffSelf - VP Price-Pottenger Nutrition Foundation | Self - VP Price-Pottenger Nutrition Foundation |
| AAlan GoldhamerSelf - President, Int'l Association of Hygienic Physicians | Self - President, Int'l Association of Hygienic Physicians |
| AAdele Hite MPH R.D.Self - Exec. Dir., Healthy Nation Coalition | Self - Exec. Dir., Healthy Nation Coalition |
| JJean Jacques HublinSelf - Dir., Human Evolution, Max Planck Institute | Self - Dir., Human Evolution, Max Planck Institute |
| MMaria LeungSelf - Founder Tasty Eats Soy Jerky | Self - Founder Tasty Eats Soy Jerky |
| SShannon McPherronSelf - Paleolithic Archaeologist, Max Planck Institute | Self - Paleolithic Archaeologist, Max Planck Institute |
| SSally Fallon MorellSelf - President, Weston A. Price Foundation | Self - President, Weston A. Price Foundation |
| WWilliam RenduSelf - PhD Anthropology Student | Self - PhD Anthropology Student |
| PProfessor Mike RichardsSelf - Head, Archaeological Science Group, Max Planck Institute | Self - Head, Archaeological Science Group, Max Planck Institute |
| GGary J. SawyerSelf - Physical Anthropologist, American Museum of Nat. History | Self - Physical Anthropologist, American Museum of Nat. History |
| BBarry Sears, Ph.D.Self - Author - President, Inflammation Research Foundation | Self - Author - President, Inflammation Research Foundation |
| LLane Sebring, M.D.Self - Board Examiner, American Academy of Anti-Aging Medicine | Self - Board Examiner, American Academy of Anti-Aging Medicine |
| DDr. Marie SoressiSelf - Max Planck Institute for Evolutionary Anthropology | Self - Max Planck Institute for Evolutionary Anthropology |
 Gary TaubesSelf - Science Journalist - Author, Good Calories Bad Calories | Self - Science Journalist - Author, Good Calories Bad Calories |
 Andrew WeilSelf - Director, Center for Integrative Medicine, U.Arizona | Self - Director, Center for Integrative Medicine, U.Arizona |
| RRobb WolfSelf - Author & Former Research Biochemist | Self - Author & Former Research Biochemist |
| JJay Wortman, M.D.Self - Métis Physician - Sr. Health Advisor | Self - Métis Physician - Sr. Health Advisor |
| KKylie Wurl, R.D.Self - Registered Dietician, Sebring Clinic | Self - Registered Dietician, Sebring Clinic |
| SSusan Loraine AndersonRunner | Runner |
| BBen LammYoung C.J. Hunt | Young C.J. Hunt |
| SShelia P. NortonEMT 1 | EMT 1 |
| CClay DavidEMT 2 | EMT 2 |
 Kelly RipaSelf - Talk Show Host | Self - Talk Show Host |
 Michelle ObamaSelf - First Lady | Self - First Lady |
