Dr Ornish (and a number of other doctors) support a plant-based whole foods diet. I've been watching a ton of their dvd's (I say "their" because they are all of the same belief). Basically, they believe that there is really one diet to treat everything----obesity, diabetes, heart disease, etc, etc. It is to reduce/eliminate fat from the diet, minimize sugar, increase fiber, exercise, and eat veggies, fruit, grains, beans. You can eat a lot of that kind of food for very few calories. I am a believer. My 82 year old dad has followed Dr Dean Ornishes reversing heart disease plan for 20 years. He did it because after 2 heart attacks and two rounds of cancer when he was in his early 60's, he knew he needed change. He has been on board with this diet 100% and is doing well. In a way, the diet seems very simple.....eat plant based food. On the other hand, for someone who eats a lot of dairy or meat, it takes getting used to. Many years ago, I told my dad, "You have to be desperate to eat like that." He said, "Yeah, a heart attack and cancer can make you pretty desperate." Finally, the last 4 months, I've transistioned to that diet/life-style as well. My husband is on the diet and has significantly improved his diabetes and cholestrol and weight. My cholestrol has dropped, no problem with diabetes, and I'm losing weight. Ironically, we didn't start this plan to lose weight----we started it to get healthy---the decreased weight just happened. Others who are in sync with Dr Dean Ornish are Neal Barnard, John McDougall, Jeff Novick and Caldwell Esselstyn, and his son Rip, etc. If you have an opportunity, watch the Forks over Knives dvd; It's excellent and an eye opener. Some libraries or churches have it to borrow, or you can buy it for $20. I just ordered cookbooks by 3 of these guys on Amazon last week, so yeah, I'm sold on this lifestyle.....and pretty excieted about it if you can't tell.