Thousands of years ago, when humans began to augment mothers’ milk with that of animals, humanity put great trust in those who would care for, feed, and 'milk' the herds of dairy cattle. Our ancestors did a wonderful job, for generations. Dairy cattle--especially the Holstein herds-- provided the necessary protein, calcium, and calories for hundreds of millions of children for thousands of years. Yet in just the recent past generation, our milk and dairy products are now adulterated. Growth hormone and antibiotics poison our children. Children in China die from contaminated milk. Similar to our advice about meat, if parents do one thing, consider giving only natural or organic milk-dairy products to your family.