Vinnie Tortorich as Self / Narrator / Producer

Eric Westman as Self / Professor, Duke Univ. / Author / Internal Medicine Dr.

Gary Taubes as Self / Investigative Journalist / Author / NuSI

Nina Teicholz as Self / Science Journalist / Author / Nutrition Coalition

Bret Scher as Self / Cardiologist

Andreas Eenfeldt as Self / Medical Doctor

Drew Pinsky as Self / Internist / Addicitionologist

Dr. Dean Ornish as Self (Archival Footage)

Jeffry Gerber as Self / Family Physician

Georgia Ede as Self / Psychiatrist