Morgan Spurlock

as Self

Daryl Isaacs

as Self - Internal Medicine

Lisa Ganjhu

as Self - Gastroenterologist & Hepatologist

Stephen Siegel

as Self - Cardiologist

Bridget Bennett

as Self - Nutritionist & Dietician

Eric Rowley

as Self - Exercise Physiologist

Mark Fenton

as Self - Former Editor: Walking Magazine

Alexandra Jamieson

as Self - Morgan's girlfriend & Vegan Chef