It's hard to argue with the health benefits of a diet rich in vegetables and fruits: Lower blood pressure; reduced risk of heart disease, stroke, and probably some cancers; lower risk of eye  and digestive problems; and a mellowing effect on blood sugar that can help keep appetite in check.  

Most people should aim for at least nine servings (at least 4½ cups) of vegetables and fruits a day, and potatoes don't count. Go for a variety of kinds and colors of produce, to give your body the mix of nutrients it needs. Best bets? Dark leafy greens, cooked tomatoes, and anything that's a rich yellow, orange, or red color.