'Breast is Best' for babies - at least that's the theory according to the medical profession in Britain. In practice the message is different. Seventy-four per cent of mothers have stopped breast-feeding by the time their babies are four months old. Not least because the subtle way in which the baby-milk manufacturers promote their product through hospitals and clinics, has convinced them that bottle feeding is just as good. The result in Britain is unnecessary illness for some babies, but in parts of the Third World the result is catastrophic - millions of babies die or are permanently damaged each year.