Cast 16

1. 

   Jim Abrahams

   Self / Father / Founder, Charlie Foundation / Filmmaker

2. 

   Vinnie Tortorich

   Self / Narrator / Producer / Trainer / Author

3. 

   Bret Scher

   Self / Cardiologist

4. 

   Gary Taubes

   Self / Journalist / Author

5. Dave Feldman

   Self / Software Engineer

6. 

   Eric Westman

   Self / Internal Medicine Doctor

7. Andreas Eenfeldt

   Self / Physician

8. 

   Drew Pinsky

   Self / Physician

9. 

   Georgia Ede

   Self / Psychiatrist

10. Nina Teicholz

    Self / Journalist

11. Vilhjalmur Stefansson

    Self (Archival footage) / Explorer

12. Ivor Cummins

    Self / Biochemical Engineer

13. Ancel Keys

    Self (Archival footage)

14. 

    Jeffry Gerber

    Self / Physician

15. 

    George McGovern

    Self (Archival footage) / Politician

16. Gary Fetke

    Self / Orthopaedic Surgeon

Crew 9