Aseem Malhotra
— Self - Consultant Cardiologist
Donal O'Neill
— Self - Producer, Cereal Killers
Stefano Pisani
— Self - Mayor of Pollica Italy
Antonio Morinelli
— Self - Proprietor, Suscettibile Restaurant, Pioppi
Susan Bessie Haslam
— Self - English Teacher, Acciaroli
Ancel Keys
— Self (archive footage)
Stephen Phinney
— Self - Author, The Art & Science of Low Carb Performance
Ida Budetta
— Self - Proprietor, San Giovanni Winery
André Oelofse
— Self - Author, Calm in the Storm
Laurie Rauch
— Self - Neurobiologist of Exercise Science / Author
Louise Knoop O'Neill
— Self - Prime Movement & Lifestyle Coach
Grandt Mason
— Self - Proprietor, Bearthfoot Shoes
Tim Noakes
— Self - Author, Lore of Running
Neville Wellington
— Self - MD
Andy Fenner
— Self - Proprietor, Frankie Fenner Meats
Julie Carter
— Self - Proprietor, Ocean Jewel's Fish
Richard Bosman
— Self - Food Entrepreneur
Pierre Winshaw
— Self - Grass Farmer, Usana Farming Estate
Danie Carinus
— Self - Grass Farmer, Usana Farming Estate
Luke Williams
— Self - Proprietor, Culture Club Cheese
Anthony Gird
— Self - Proprietor, Honest Chocolate
Bill Gifford
— Self - Author, Spring Chicken