• 
  Joel Salatin

  Himself - Farmer, Author, Food Freedom Advocate
• 
  Sally Fallon Morell

  President: Weston A. Price Foundation
• 
  Leo Galland

  Himself - Author
• 
  Sayer Ji

  Himself - Founder: Greenmedinfo.com
• 
  Cyndi O'Meara

  Herself - Nutritionist, Founder : Changing Habits
• 
  Dr. David Perlmutter

  Himself - Neurologist and New York Times Best Selling Author
• 
  Dr. Terry Wahls

  Herself - Clinical Professor of Medicine, University of Iowa
• 
  Dr. Natasha Campbell-McBride

  Herself - Author

• 
  Dr. Stephanie Seneff

  Herself - Senior Research Scientist, MIT
• 
  Sarah Ballantyne

  Herself - Health Educator / Advocate
• 
  Pete Evans

  Himself - Chef, Author
• 
  Kim Morrison

  Health and Lifestyle Educator, Author and Speaker
• 
  Professor Rodney Ford

  Gastroenterologist and Food Allergy Specialist
• 
  Mark Sisson

  Author
• 
  Dr. Vandana Shiva

  Author, Activist, Pioneer, Scientific Advisor