Demography helps in the understanding of population problems particularly of the less developed regions of the world. It also helps in planning the population of developed and undeveloped countries. The chief problem concerning population in a country is to control population growth in correlation with the growth of health amenities food supplies employment education and housing. In the brief the following may be noted about the importance of demography.
Health planning.
Persistent high fertility causes significant health problem both for the mother and the child. In the !most of the developing countries married women's are characterized by continuous nutritional drain from repeated pregnancies. Since demography studies fertility and connected problems therefore its study is a must for health planning of the country.
Planning of food supply.
Planning of food supply means availability of adequate food for total population both in quality as well as in quantity. Inadequate food supply results in growth retardation high mortality rates poor hell low physical activity and consequently low productivity. There fore food supply !must grow in correlation with population growth. Thus planning of food for require and presupposes population studies.
Planning of employment.
Employment is an international problem these days. Unemployment and under development is fast growing not only into the economically backward countries but also in more developed nations. A demographic factor of considerable importance is in the high dependency ratio in less developed countries such as Pakistan and India where four or five persons depend upon the income of one person. There fore employment planning require study of population in all its aspect..
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