Choose a diet rich in a variety of plant-based foods. Eat plenty of fruits and vegetables. Be physically active, try to maintain your weight at stable level. Drink alcohol in moderation, if at all.
Red wine has some beneficial properties but grape juice has the same ones.
Select foods low in fat and salt. No fat is not good for you either-use olive oil, canola oil to cook and flax seed oil on your salads. I read labels. Since wind, or rain can bring chemicals to organic foods, they need to be washed thoroughly also. Wash well, remove outer leaves of greens.