Gary Taubes
Self - Investigative Science Journalist / Author
Acting
Nina Teicholz
Self - Investigative Science Journalist / Author
Acting
Ancel Keys
Self (Archival footage) - Physiologist
Acting
Tim Noakes
Self - Scientist / Author / Professor Emerita
Acting
Mark Hyman
Self - Narrator / Nutritionist / Functional Medicine Physician
Acting
Bret Scher
Self - Cardiologist
Acting
Sarah Hallberg
Self - Obesity Specialist
Acting
Zoe Harcombe
Self - Obesity Researcher
Acting
Salim Yusuf
Self - Cardiologist
Acting
Robert Lustig
Self - Pediatric Endocrinologist
Acting
Jason Fung
Self - Diabetes Specialist
Acting
Bill Maher
Self - Comedian (archive footage)
Acting
Eric Westman
Self - Obesity Specialist
Acting
Jonny Bowden
Self - Certified Nutritionist
Acting
Dwight D. Eisenhower
Self - President (archive footage)
Acting
Alyssa Gallagher
Self - Certified Diabetes Educator
Acting
Brian Gaudette
Self - US Army Pilot
Acting
Brian Lenzkes
Self - Internal Medicine Physician
Acting
Doug Reynolds
Self - Founder and CEO, LowCarbUSA
Acting
Dave Asprey
Self - Founder, Bulletproof
Acting