Gary Taubes

Self / Author

Robert Lustig

Self / Doctor of Pediatric Endocrinology

Craig Wilcox

Self / Researcher, Okinawa Centenarian Study

Alexis Gomez

Self / Former Patient of Dr. Lustig

Cristin Kearns

Self / Dentist, Denver, Colorado

Yoni Freedhoff M.D.

Self / University of Ottawa

Jean-Marc Schwartz

Self / Biochemist

John Yudkin

Self (archival footage)

Ancel Keys

Self (archival footage)

Sami Inkinen

Self / Endurance Athlete

Dr. John L. Sievenpiper

Self / Researcher, St. Michael's Hospital, Toronto

Terry Dean

Self / Heart and Stroke Foundation

Frank Lisciandro

Self / Filmmaker

Sheldon Reiser

Self / Researcher at the U.S. Department of Agriculture

Judith Hallfrisch

Self / Nutritionist

Stan Glantz

Self / Head of the Tobacco Research Unit, University of CA

Arya Sharma

Self / Medical Director, Canadian Obesity Network

Kim Raine

Self / Alberta University

Richard Ellis

Self / McDonald's Canada

Laura Schmidt

Self / Faculty of Medicine, University of California