He's down and out by the time the Caveman Doctor has finished with him. :-)
Podcast 19: Battle Royale: Champ vs. Ornish - Caveman Doctor
Joking aside, it's quite an interesting and amusing episode. Much to Relentless Roger's amusement, the Doctor tells a funny story about how he's in a job interview and the interviewer says that he's seen Caveman Doctor website and then adds, "So what do you think of the China Study?"
And there's a reference to the primal Blueprint recipes.