Gary Taubes

Self / Investigative Science Journalist / Author

Nina Teicholz

Self / Investigative Science Journalist / Author

Ancel Keys

Self (Archival footage) / Physiologist

Tim Noakes

Self / Scientist / Author / Professor Emerita

Mark Hyman

Self / Narrator / Nutritionist / Functional Medicine Physician

Bret Scher

Self / Cardiologist

Sarah Hallberg

Self / Obesity Specialist

Zoe Harcombe

Self / Obesity Researcher

Salim Yusuf

Self / Cardiologist

Robert Lustig

Self / Pediatric Endocrinologist

Doug Reynolds

Jason Fung

Self / Diabetes Specialist

Bill Maher

Self (Archival footage) / Comedian

Eric Westman

Self / Obesity Specialist

Jonny Bowden

Self / Certified Nutritionist

Dwight D. Eisenhower

Self (Archival footage) / President

Alyssa Gallagher

Self / Certified Diabetes Educator

Brian Gaudette

Self / US Army Pilot

Brian Lenzkes

Self / Internal Medicine Physician

Doug Reynolds

Self / Founder and CEO, LowCarbUSA

Dave Asprey

Self / Founder, Bulletproof

Jennifer Isenhart

Director

Jennifer Isenhart

Guión

David di Donato

Director de Fotografía

Kevin Eslinger

Director de Fotografía

Tom Hadzor

Director de Fotografía

Wolfgang Isenhart

Director de Fotografía

Bill Krumm

Director de Fotografía

Tom Hadzor

Productor

Wide Eye Productions

Compañía de Produccion

Afinia Films

Compañía de Produccion

Indie Rights

Compañía de Produccion

Amanda Atkins

Productor Ejecutivo

Bill Krumm

Editor

Tim Kupsick

Editor