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