. >> clinton's dietary guides, dean ornish and this guy, caldwell esselston at the cleveland clinic. >> apparently he read my book. i've never met the man. >> he wrote me a letter saying i was even cheating online because he was afraid in my protein drink i had some dairy in there. it was hilarious. and i checked and on one of them, he was right. i only had done it once. >> you check it out. >> yeah, i did. >> every month the 77-year-old esselston holds a day-long seminar attracting doctors and heart patients from across the country -- like sharon, a retired private investigator from canton, ohio. she had a heart attack six months earlier after a coronary artery became completely block. >> he said, for someone who had what you have, the only warning you usually get is death. and at that point i really knew how lucky i was. >> like a lot of women, she did not experience the classic chest pain. but rather, fatigue and a pain in her jaw. >> he said you're going to have to have open heart surgery. he says i can fix you today. i can just take you right down to o.r. and i can operate on yo