you can imagine, the meat, egg and dairy associations think that's a terrible idea. >> incorporating lean beef into a healthy diet can actually help you stick to a healthy diet because it is a food that people enjoy. >> extra source egg -- eggs are a source of 13 vitamins and minerals. >> dairy products are very nutrient-rich. you get a lot of nutrients for every cal ray that you consume. >> a plant-based diet runs up against our meat-loving culture. >> us doctors eat meat because most americans eat meat. if they don't really see for themselves or their own families why it might be a good idea to cut back or even cut meat out of your diet all together then they may not be so inclined to trim for their patients. >> even doctors who do see the benefits of the esselston diet may not recommend it to patients. >> anybody who's able to do that diet can have dramatic success. the problem is is that many people are unable or unwilling to make these changes and so in