摩根·史柏路克
Morgan Spurlock
饰：本人
布兰妮·斯皮尔斯
Britney Jean Spears
饰：本人
迈克尔·乔丹
Michael Jordan
饰：本人
John Banzhaf
John Banzhaf
饰：Himself - lawyer (as John F. Banzhaf III)
Bridget Bennett
Bridget Bennett
饰：Herself (as Bridget Bennett R.D.)
Kelly Brownell
Kelly Brownell
饰：Himself
Ron English
Ron English
饰：Himself - painter
杰瑞德·福格尔
Jared Fogle
饰：Himself - spokesman for Subway
Dr. Lisa Ganjhu
Dr. Lisa Ganjhu
饰：Herself (as Lisa Ganjhu D.O. Gastroenterologist & Hepatologist)
Don Gorske
Don Gorske
饰：Himself - hearty eater of big macs
Mary Gorske
Mary Gorske
饰：Herself - Don's wife
Samuel Hirsch
Samuel Hirsch
饰：Himself - lawyer
Dr. Daryl Isaacs
Dr. Daryl Isaacs
饰：Himself (as Daryl M. Isaacs MD Internal Medicine)
亚历山德拉·杰米森
Alexandra Jamieson
饰：Herself - Morgan's Girlfriend (as Healthy Chef Alex)
Squire Fridell
饰：Himself (archive footage)
Marion Nestle
Marion Nestle
饰：Herself
John Robbins
John Robbins
饰：Himself - journalist and writer
Ashley Sandy
Ashley Sandy
饰：Herself
Kacie Sandy
Kacie Sandy
饰：Herself
Laura Sandy
Laura Sandy
饰：Herself
Dr. David Satcher
Dr. David Satcher
饰：Himself - former Health Minister (as Dr. David Satcher)
Dr. Stephen Siegel
Dr. Stephen Siegel
饰：Himself (as Steven Siegel MD FACC Cardiologist)
Kymme Simchak
Kymme Simchak
饰：Herself
Jacob Sullum
Jacob Sullum
饰：Himself - journalist
汤米·汤普森
Tommy Thompson
饰：Himself - US Secretary of Health
Dr. Lisa Young
Dr. Lisa Young
饰：Herself - nutrition professor (as Dr. Lisa Young)
Eric Rowley
Eric Rowley
饰：Himself, exercise physiologist
Mark Fenton
Mark Fenton
饰：Himself, former editor, Walking
William J. Klish
William J. Klish
饰：Himself - medicine doctor (as William Klish)
Margo Wootan
Margo Wootan
饰：Herself (as Dr. Margo Wootan)
Barbara Brown
Barbara Brown
饰：Herself - SODEXHO executive
Kay Glover
Kay Glover
饰：Herself, head cook
Greg Bretthauer
Greg Bretthauer
饰：Himself, dean
Debra Larson
Debra Larson
饰：Herself, school social worker
Paul Stitt
Paul Stitt
饰：Himself
Marlene Canter
Marlene Canter
饰：Herself
Gene Grabowski
Gene Grabowski
饰：Himself - GMA deputy CEO
Phil Lawler
Phil Lawler
饰：Himself, phys ed instructor
Brian Philips
Brian Philips
饰：Himself - physical training instructor
Gerald N. Tirozzi
Gerald N. Tirozzi
饰：Himself
Neal Barnard
Neal Barnard
饰：Himself
Catherine Schilcher
Catherine Schilcher
饰：Herself, nutritionist
Bruce Howlett
Bruce Howlett
饰：Himself - fat patient
Adam Naaman
Adam Naaman
饰：Himself
Carl Geisler
Carl Geisler
饰：Himself - surgeon
Lisa Howard
Lisa Howard
饰：Herself, McDonald's spokesman
Mary Bollino
Mary Bollino
饰：Herself - Naperville High School restaurant supervisor
Caitlin
Caitlin
饰：Herself - waitress for McDonald's
Tammy Howlett
Tammy Howlett
饰：Bruce's wife
Chemeeka Walker
饰：Herself - Kid of Camp Mt. Laurel
Dania Abu-Rmaileh
饰：Herself - Kid of Camp Mt. Laurel
Amanda Kearsan
饰：Herself - Kid of Camp Mt. Laurel
Christian Baucher
饰：Himself - Kid of Camp Mt. Laurel
Amelia Giancarlo
饰：Herself - Kid of Camp Mt. Laurel
Geoffrey Giancarlo
饰：Himself - Kid of Camp Mt. Laurel
Alexandria Morgan
饰：Herself - Kid of Camp Mt. Laurel
Chanelle Clarke
饰：Herself - Kid of Camp Mt. Laurel
Marisa Danenfield
饰：Herself - Kid of Camp Mt. Laurel
Katie Danenfield
饰：Herself - Kid of Camp Mt. Laurel
Edmand Cardero
饰：Himself - Kid of Camp Mt. Laurel
Jonnae Strong
饰：Herself - Kid of Camp Mt. Laurel
Audrey Whitfield
饰：Herself - Kid of Camp Mt. Laurel
Scott Ambrozy
Scott Ambrozy
饰：Himself (scenes deleted)
大卫·萨彻
David Satcher
饰：自己
Daryl Isaacs
饰：Self - Internal Medicine,(as Daryl M. Isaacs MD) (as Dr. Daryl Isaacs)
Caitlin Spurlock
饰：Self,(as Caitlin)
Matt Bohling
Matt Bohling
饰：Self
Michael Paige
饰：Self - 1st Grade Student