Synopsis The invention and discoveries I the field of medicine in the nineteenth and twentieth century have made the lives of humanity much sager and increased the life expectancy at all levels. The mortality and morbidity rates have markedly decreased. But at the same time there has been population explosion all over the world specially I Asia and African countries. Three main Asian Giants in population Viz China, India and Japan. Sometimes back the problem was not considered to be series specially in India but in the present context it has mounted to serious concern but the problem has become un-controllable. Longevity and life expectancy has remarkably increased.