Do you know the old saying "An apple a day keeps the doctor away? It might sound old-fashioned, but you can actually "prevent illnesses with a healthy diet. For a start, you should eat a lot of green vegetables, such as b Moreover, to "b or 2s your immune system, you should eliminate 55 and any other foods that contain a lot of sugar. Also, you need to remember that once you c a cold, a proper diet can help you get from your doctor. Sp... what's for lunch?