Charlotte Gerson
Herself - Dr. Gerson's Daughter
T. Colin Campbell
Himself - Professor Emeritus of Nutritional Biochemistry, Cornell University
Caldwell Esselstyn Jr.
Himself - Surgeon and Coronary Specialist
Andrew W. Saul
Himself - Author
Stephen Barret
Himself - Health Fraud Expert
Yoshihiko Hoshino
Himself - Professor of Medicine