Processing not only depletes the nutritional quality of the food, it can also change the molecular structure of food making it, in some cases, toxic. Consider milk: the pasteurization process changes the entire physicochemical state of the milk, deactivating key enzymes, reducing the bioavailability of its minerals, and even changing the structure of proteins. Pasteurized milk will kill a calf! No calf has survived more than eight weeks on pasteurized milk. http://www.beyondhealth.com/eating-good-diet.htm