Gary Taubes

Self - Investigative Science Journalist / Author

Mark Hyman

Self - Narrator / Nutritionist / Functional Medicine Physician

Bret Scher

Self - Cardiologist

Robert Lustig

Self - Pediatric Endocrinologist

Bill Maher

Self - Comedian (archive footage)

Eric Westman

Self - Obesity Specialist

Dwight D. Eisenhower

Self - President (archive footage)