The formula in his book Living Well is a simple and one we should all be following (You can read about it here):
Eat 5 servings of raw fruits and vegetables per day
Drastically reduce processed foods
Lower sodium/salt intake
Look for 100% whole grains (not refined grains and avoid multigrain, 100% wheat, seven grain and bran)
Follow a program for physical fitness (at least 30 minutes a day for most days in a week)
Instead of fad diets follow the DASH diet or Mediterranean Diet
Even genetic diseases might be held off if our bodies are in better shape and not overweight according to many of the experts who have commented in his book.