The say breast milk is the perfect food for baby's mind and body. Studies show that children who nurse may be healthier and happier and, if they breast-feed for longer than seven months, have a higher IQ. Equally important, many believe, is the intense bond that develops between mother and child.
Which is one reason most American moms don't want to share the experience with anyone else. Yet wet-nursing (hiring a woman to breast-feed your baby), which most of the Western world abandoned in the 19th century, is making a minor comeback among young moms. So is cross-nursing, in which mothers...