- Mark C. Houston - Self - M.D., M.S., S.C.H., A.B.A.A.M., F.A.C.P., F.A.H.A.
- Dale Bredesen - Self
- Al Gore - Self - archival footage
- Filomena Trindade - Self
- Kelly Brogan - Self
- Eric Zaremski - Self
- Paul Porter, Farmer - Self
- Michael Antoniou - Self - Reader in Molecular Genetics, King's College London
- Clare Robinson - Self - GMO Watch
- Steven Druker - Self - Filed lawsuit against the FDA
- Kenny Horton - Self - Dublin Bottling Works
- Robert Lustig - Self - archived footage
- Quinn Eaker - Self - author, Full Spectrum Health
- Paul Connett - Self - archival footage, The Case Against Fluoridation
- Dominic D'Agostino - Self - Research Scientist
- Bob Barker - Self
- Andrew Perez - Self
- Kevin O'Rourke - Self
- Susan Downs
- Susan Downs
Capítulo disponible en las siguientes plataformas: