Cattle/cows are by nature grazers, or grass feeders. When you feed animals food sources that are not natural to them it causes problems for them as well as those who eat their meat. Cows are not meant to eat the type of foods that they are given commercially. Corn and soybean feeds are by-products of the foods that are processed for human consumption. There has been a lot of press concerning these foods too (high fructose corn syrup, soy plant estrogens, genetically engineered foods, growth hormones, antibiotics), and the problems they can cause. It is up to us to be smart consumers, and to swing the pendulum away from industries that are trying to make an easy buck off of our, and our childrens declining health.