**Fruits & Vegetables: Health Benefits, Side Effects, Uses, Dosage?** These foods are important because they are (mainly starch and fiber) but out carbohydrates vitamins, mineral salts and other substances that are particularly important for our health. In addition, grains and legumes are also good sources of protein. Many studies ... of flour with added bran or other fiber. To put this advice into practice, see the portions "your diet varied Customize" listed under item 8).