If you or your spouse has allergies, asthma, eczema, autoimmunity, bronchitis, or sinusitis, or if your child is experiencing frequent colds and ear infections, it is worth experimenting with total elimination of cow's milk in all of its forms. Goat's milk is OK, as is soy milk, but be aware that soy is a common allergen in infants, especially if it is introduced too early.
8 Weeks To Optimum Health By Andrew Weil MD, page 222
Suzanne Havala, a registered dietitian from North Carolina, who was a co-author of the American Dietetic Association's 1992 edition of its position paper on vegetarian diets stated at the Washington press conference that, after weaning, there is no need for milk of any sort. "Vegetarians and their children," she said, "get all the calcium they need from leafy vegetables, broccoli, tahini and tofu made with calcium sulfate." Dr. Russell J. Bunai, a pediatrician associated with the PCRM, who later took a two-year sabbatical from his practice to review the world literature on the subject, said,".. of all mammals, only humans drink the milk of another species." In Ghana, where he served as a medical missionary, he noted that the traditional diet contains no dairy products and that asthma and other allergic problems were uncommon. He saw these problems only in people who had adopted more westernized diets that included cow's milk.
A Vegetarian Doctor Speaks Out by Charles R Attwood MD FAAP, page 15