Health is an elusive concept to define from the beginning. Various communities have different concepts of health as part of their culture. With the demands on health care ever increasing, the costs of interventions as well as their benefits must be assessed concurrently. This is the area covered by the science of health economics, which play an increasing role throughout all health services as an aid to prioritizing the deployment of resources. The rapid increase in health care expenditure is a global phenomenon. Health economics is, about resource management - what is affordable and...

Genetic Epidemiology came into existence slowly by rapprochment between the epidemiologically oriented geneticists and by genetically oriented epidemiologist. Neel and Schull in 1954 presented the first account of Genetics and epidemiology and introduced it as 'Epidemiological genetics', presenting it in a manner in which genetic concepts became an integral part of the armamentarium of modern epidemiologist. Genetic epidemiology is the study of the role of genes and environment on markers of health and disease risk in populations. It makes an attempt to identify the of risk factors...