People feel poorly because they are nourished by foods you wouldn't feed to your dog and cat. The rich western diet is full of fat, sugar, cholesterol, salt, animal protein - all the wrong foods for people.
John A. McDougallAn important fact to remember is that all natural diets, including purely vegetarian diets without a hint of dairy products, contain amounts of calcium that are above the treshold for meeting your nutritional needs....In fact,calcium deficiency caused by an insufficient amount if calcium in the diet is not known to occur in humans.
John A. McDougall