Next in declining order of healing effectiveness is what I call a raw food healing diet or cleansing diet. It consists of those very same watery fruits and nonstarchy vegetables one juices or makes into vegetable broths, but eaten whole and raw. Heating food does two harmful things: it destroys many vitamins, enzymes and other nutritional elements and it makes many foods much harder to digest. So no cooked vegetables or fruits are allowed because to maintain health on this limited regimen it is essential that every possible vitamin and enzyme present in the food be available for digestion. Even though still raw, no starchy or fatty vegetables or fruits are allowed that contain concentrated calories like potatoes, winter squash, avocados, sweet potatoes, fresh raw corn, dates, figs, raisins, or bananas. And naturally, no salad dressings containing vegetable oils or (raw) ground seeds are allowed. Nor are raw grains or other raw concentrated energy sources. When a person starts this diet they will at first experience considerable weight loss because it is difficult to extract a large number of calories from these foods (though I have seen people actually gain weight on a pure melon diet, so much sugar do these fruits have, and well-chewed watermelon seeds are very nourishing). Eating even large quantities of only raw fruit and raw non-starchy vegetables results in a slow but steady healing process about 10 to 20 percent as rapid as water fasting. A raw food cleansing diet has several huge advantages. It is possible to maintain this regimen and regularly do non-strenuous work for many months, even a year or more without experiencing massive weight loss and, more important to some people, without suffering the extremes of low blood sugar, weakness and loss of ability to concentrate that happen when water fasting. Someone on a raw food cleanse will have periods of lowered energy and strong cravings for more concentrated foods, but if they have the self-discipline to not break their cleansing process they can accomplish a great deal of healing while still maintaining more or less normal (though slower paced) life activities. However, almost no one on this diet is able to sustain an extremely active life-style involving hard physical labor or competitive sports. And from the very beginning someone on a raw food cleanse must be willing and able to lie down and rest any time they feel tired or unable to face their responsibilities. Otherwise they will inevitably succumb to the mental certainty that their feelings of exhaustion or overwhelm can be immediately solved by eating some concentrated food to "give them energy." Such low-energy states will, however, pass quickly after a brief nap or rest.