Character Name : Self - Investigative Science Journalist / Author

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Gender : Male

Character Name : Self - Investigative Science Journalist / Author

Original Name : Nina Teicholz

Gender : Female

Character Name : Self (Archival footage) - Physiologist

Original Name : Ancel Keys

Gender : Male

Character Name : Self - Scientist / Author / Professor Emerita

Original Name : Tim Noakes

Gender : Male

Character Name : Self - Narrator / Nutritionist / Functional Medicine Physician

Original Name : Mark Hyman

Gender : Male

Character Name : Self - Cardiologist

Original Name : Bret Scher

Gender : Male

Character Name : Self - Obesity Specialist

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Gender : Male

Character Name : Self - Obesity Researcher

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Gender : Male

Character Name : Self - Cardiologist

Original Name : Salim Yusuf

Gender : Male

Character Name : Self - Pediatric Endocrinologist

Original Name : Robert Lustig

Gender : Male

Character Name : Self - Diabetes Specialist

Original Name : Jason Fung

Gender : Male

Character Name : Self - Comedian (archive footage)

Original Name : Bill Maher

Gender : Male

Character Name : Self - Obesity Specialist

Original Name : Eric Westman

Gender : Male

Character Name : Self - Certified Nutritionist

Original Name : Jonny Bowden

Gender : Male

Character Name : Self - President (archive footage)

Original Name : Dwight D. Eisenhower

Gender : Male

Character Name : Self - Certified Diabetes Educator

Original Name : Alyssa Gallagher

Gender : Male

Character Name : Self - US Army Pilot

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Gender : Male

Character Name : Self - Internal Medicine Physician

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Gender : Male

Character Name : Self - Founder and CEO, LowCarbUSA

Original Name : Doug Reynolds

Gender : Male

Character Name : Self - Founder, Bulletproof

Original Name : Dave Asprey

Gender : Male