Cow's milk has one quarter the amount of whey compared to mother's milk. Cow's milk has five times as much salt and seven times the phosphorous, but only one-tenth of the Vitamin E content and half the Vitamin A content of mother's milk. Cow's milk has only three percent linoleic acid compared with mother's milk at seven percent. An insufficiency of this essential fatty acid in the maturing infant can cause diaper rash, diarrhea, and eczema. Cow's milk contains less lactose than human milk.
Lactose contains galactose that is needed to develop the myelin sheath which insulates the nerves.
Human infants naturally have a high percentage of bifidus flora in their intestines to facilitate milk digestion. The beta-lactose in human milk maintains a pure culture of bifidus flora. The alpha-lactose of cow's milk cannot properly maintain a healthy culture of bifidus bacteria. This allows harmful bacteria freedom to multiply and create damaging by-products. Cow's milk has two to three times the protein content of mother's milk.