Dairy products are high in fat and like all animal fats very high in saturated fats. Unfortunately for consumers processed cow's milk found on the store shelf is purposely mislabeled to give the impression that it is low fat. Cheeses are very high fat. Also, if they skim the fat off one product it ultimately ends up in other food products. Cow's milk, like all animal products, also contains cholesterol.
Iron deficiency is more likely on a dairy rich diet.
Cow's milk products are very low in iron, thus, if they become a major part of one's diet, iron deficiency is more likely. In addition, clinical studies have shown that infants consuming cow's milk lose small amounts of blood from their digestive tracts. For this reason, the American Academy of Pediatrics recommends that infants below one year of age not be given whole cow's milk. If you consumed only dairy products, you would have to drink 50 cups of milk to reach your RDA's for iron. If you have any doubts about this, check the nutrition label on the side of a cereal box.