Jim Abrahams
Self - Father / Founder, Charlie Foundation / Filmmaker
Writing
Vinnie Tortorich
Self - Narrator / Producer / Trainer / Author
Acting
Bret Scher
Self - Cardiologist
Acting
Gary Taubes
Self - Journalist / Author
Acting
Dave Feldman
Self - Software Engineer
Acting
Eric Westman
Self - Internal Medicine Doctor
Acting
Andreas Eenfeldt
Self - Physician
Acting
Drew Pinsky
Self - Physician
Acting
Georgia Ede
Self - Psychiatrist
Acting
Nina Teicholz
Self - Journalist
Acting
Vilhjalmur Stefansson
Self - Explorer (archive footage)
Acting
Ivor Cummins
Self - Biochemical Engineer
Production
Ancel Keys
Self (archive footage)
Acting
Jeffry Gerber
Self - Physician
Acting
George McGovern
Self - Politician (archive footage)
Acting
Gary Fetke
Self - Orthopaedic Surgeon
Acting