Aseem Malhotra as Self - Consultant Cardiologist

Donal O'Neill as Self - Producer, Cereal Killers

Stefano Pisani as Self - Mayor of Pollica Italy

Antonio Morinelli as Self - Proprietor, Suscettibile Restaurant, Pioppi

Susan Bessie Haslam as Self - English Teacher, Acciaroli

Ancel Keys as Self (archive footage)

Stephen Phinney as Self - Author, The Art & Science of Low Carb Performance

Ida Budetta as Self - Proprietor, San Giovanni Winery

André Oelofse as Self - Author, Calm in the Storm

Laurie Rauch as Self - Neurobiologist of Exercise Science / Author

Louise Knoop O'Neill as Self - Prime Movement & Lifestyle Coach

Grandt Mason as Self - Proprietor, Bearthfoot Shoes

Tim Noakes as Self - Author, Lore of Running

Neville Wellington as Self - MD

Andy Fenner as Self - Proprietor, Frankie Fenner Meats

Julie Carter as Self - Proprietor, Ocean Jewel's Fish

Richard Bosman as Self - Food Entrepreneur

Pierre Winshaw as Self - Grass Farmer, Usana Farming Estate

Danie Carinus as Self - Grass Farmer, Usana Farming Estate

Luke Williams as Self - Proprietor, Culture Club Cheese

Anthony Gird as Self - Proprietor, Honest Chocolate

Bill Gifford as Self - Author, Spring Chicken