Vinnie Tortorich

Self / Narrator / Producer

Eric Westman

Self / Professor, Duke Univ. / Author / Internal Medicine Dr.

Gary Taubes

Self / Investigative Journalist / Author / NuSI

Bret Scher

Self / Cardiologist

Drew Pinsky

Self / Internist / Addicitionologist

Jeffry Gerber

Self / Family Physician

Georgia Ede

Self / Psychiatrist