| Person | Type | Job | Role(s) |
|---|---|---|---|
 Tom Hadzor | Crew | Production | Producer |
Jennifer Isenhart | Crew | Directing | Director, Writer |
Amanda Atkins | Crew | Production | Executive Producer |
Bill Krumm | Crew | Editing | Editor |
Tim Kupsick | Crew | Editing | Editor |
 Bill Maher | Cast | Actor | Self (Archival footage) / Comedian |
 Dwight D. Eisenhower | Cast | Actor | Self (Archival footage) / President |
 Gary Taubes | Cast | Actor | Self / Investigative Science Journalist / Author |
 Tim Noakes | Cast | Actor | Self / Scientist / Author / Professor Emerita |
 Mark Hyman | Cast | Actor | Self / Narrator / Nutritionist / Functional Medicine Physician |
 Robert Lustig | Cast | Actor | Self / Pediatric Endocrinologist |
Dave Asprey | Cast | Self / Founder, Bulletproof | |
 Nina Teicholz | Cast | Actress | Self / Investigative Science Journalist / Author |
 Ancel Keys | Cast | Self (Archival footage) / Physiologist | |
Jason Fung | Cast | Self / Diabetes Specialist | |
Jonny Bowden | Cast | Self / Certified Nutritionist | |
 Eric Westman | Cast | Actor | Self / Obesity Specialist |
 Bret Scher | Cast | Actor | Self / Cardiologist |
Zoe Harcombe | Cast | Self / Obesity Researcher | |
Salim Yusuf | Cast | Self / Cardiologist | |
Sarah Hallberg | Cast | Self / Obesity Specialist | |
Alyssa Gallagher | Cast | Self / Certified Diabetes Educator | |
Doug Reynolds | Cast | Self / Founder and CEO, LowCarbUSA | |
Brian Gaudette | Cast | Self / US Army Pilot | |
Brian Lenzkes | Cast | Self / Internal Medicine Physician | |
| Person | Type | Job | Role(s) |
