David D. Perlmutter

Himself

Tim Noakes

Himself

Andreas Eenfeldt

Himself

Jimmy Moore

Himself

Gary Taubes

Himself

Lathe Poland

Self

Jonathan Bailor

Self

Jonny Bowden

Self

Kashia Cave

Self

Ann Cooper

Self

Andrea DiMauro

Self

Yoni Freedhoff M.D.

Self

Jeffery Gerber M.D.

Self

Jacqueline Gjurgevich

Self

Stephan Guyenet M.D.

Self

Adele Hite MPH R.D.

Self

Sami Inkinen

Self

Meredith Loring

Self

David L. Katz

Self

Rick Lindquist

Self

Marion Nestle

Self

Jennifer Phelps M.D.

Self

Marlene Schwartz PHD

Self

Wendy Scinta M.D.

Self

Mark Sisson

Self

Christine Straley

Self

Ronald Tamler M.D.

Self

Melanie Warner

Self

Brian Wansink M.D.

Self

Eric Carlsen

Narrator

Gisela Carlsen

Nurse

Daniel Damiano

Dr. K. Lulis

Elyssia Poland

Self

Daniel Riffe

Thomas Willis