Do vegetarian diets reduce cancer risk?

　　Vegetarian diets include many healthful features. They tend to be low in saturated fats and high in fiber, vitamins, and phytochemicals. It is not possible to conclude at this time, however, that a vegetarian diet has any special benefits for the prevention of cancer. Diets including lean meats in small to moderate amounts can also be healthful. Strict vegetarian diets that avoid all animal products, including milk and eggs, should be supplemented with vitamin B12, zinc, and iron (especially for children and women after menopause).