Top Billed Cast

1. 

   Gary Taubes

   Self - Investigative Science Journalist / Author

2. 

   Nina Teicholz

   Self - Investigative Science Journalist / Author

3. 

   Ancel Keys

   Self (Archival footage) - Physiologist

4. 

   Tim Noakes

   Self - Scientist / Author / Professor Emerita

5. 

   Mark Hyman

   Self - Narrator / Nutritionist / Functional Medicine Physician

6. 

   Bret Scher

   Self - Cardiologist

7. 

   Sarah Hallberg

   Self - Obesity Specialist

8. 

   Zoe Harcombe

   Self - Obesity Researcher

9. 

   Salim Yusuf

   Self - Cardiologist

10. 

    Robert Lustig

    Self - Pediatric Endocrinologist

11. 

    Jason Fung

    Self - Diabetes Specialist

12. 

    Bill Maher

    Self - Comedian (archive footage)

13. 

    Eric Westman

    Self - Obesity Specialist

14. 

    Jonny Bowden

    Self - Certified Nutritionist

15. 

    Dwight D. Eisenhower

    Self - President (archive footage)

16. 

    Alyssa Gallagher

    Self - Certified Diabetes Educator

17. 

    Brian Gaudette

    Self - US Army Pilot

18. 

    Brian Lenzkes

    Self - Internal Medicine Physician

19. 

    Doug Reynolds

    Self - Founder and CEO, LowCarbUSA

20. 

    Dave Asprey

    Self - Founder, Bulletproof