"I recommend to most of my patients that they eat large volumes of fresh, raw fruits and vegetables (three to five pounds per day, yielding 600 to 1,100 calories) and get enough cooked, starchy vegetables (such as potatoes, yams, and hard squashes) and whole grains and legumes (such as brown rice, millet, quinoa, corn, lentils, and other beans) so that they can maintain good strength and energy levels and not get too skinny. If vegetable foods naturally high in fat and protein are used, I recommend limiting them to half of an avocado, or one to two ounces of raw nuts, or three to four ounces of soy products per day."