A perfectly logical and valid system. ALL infants should have NOTHING BUT BREAST MILK for the first six months of life. After that, other foods are introduced slowly while keeping up nursing as long as the child wants. Throughout this time the mother and baby may encounter a few problems, but by far most of them can be handled well with good advice and practices. The best source for this is La Leche League, established originally in Chicago and now with local Leaders throughout the world, and certainly available in most US and Canadian centers. But occasionally there are severe short-term problems that make it necessary to suspend the nursing relationship. In those cases, the alternative of switching to cow's milk (and no, goat's milk or soy products are no better!) is a very poor one. Human milk from one of these organizations is a much better choice. Even better is the possibility of having a friend who is also nursing her child take over for the short time that the ill mother is incapacitated. One of the trickiest parts of this is that, in some cases (say, a mother injured severely in an auto accident) there is no warning and VERY little time to make the alternative arrangement.