It is now widely recognised that investment in health fields contributes to economic growth of countries by stimulating growth in ”human capital formation” and by preventing economic loss due to sickness, disability, premature death and cost of treatment. An integrated plan, in which investment in certain key areas in health field is made side by side with investment in similar areas in other social and economic fields, is essential for reversing the vicious circle of poverty and sickness in developing countries. Health economists will have to work in close collaboration with social planners in other fields in order to develop certain common units for measuring health and other social and economic problems and to identify those areas for investment in health fields which have considerable bearing on social and economic development.