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

Ancel Keys
Self (archive 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

Meredith Inkinen
Self - Endurance Athlete