Tom Naughton as Self / CSPI Guy / Customer

Chareva Naughton as Self / Veggie Girl / Counter Clerk

Morgan Spurlock as Self / Documentary Film Maker / Director, Supersize Me

Michael Eades as Self

Gary Taubes as Self

Peter Paddon as Guy who sees himself on the news

Sally Fallon Morell as Self / Weston A. Price Foundation

Mary Enig as Self / Weston A. Price Foundation

Mary Dan Eades as Self

Al Sears as Self / Wellness Research Foundation

Eric Oliver as Self / University of Chicago

Jacob Sullum as Self / Reason Magazine

Eric Feit as Self