In the present-day world, migrants and other mobile individuals like migrant workers, asylum seekers etc. form an ever-expanding global population with growing socio-demographic as well as political importance. Disparities are found very often between a migrant population s place of origin and its destination, especially with relation to health determinants. The effects of such disparities are observable at individual as well as population levels. Epidemiology of certain diseases is amply influenced by migration, both globally and in nations receiving migrants. Though the outcomes may vary with specific morbidities peculiar to certain migrant groups and their geographical origin and distribution, general epidemiological principles may have a much wider applicability. Another issue that very often faces the present-day world is the mobility of health professionals across different geographical locations thereby exerting influence on human health and allied aspects. The book is expected to provide an overview of the above issues having relevance to the contemporary global demographic dynamics. It is a serious attempt to elucidate the issue of population mobility with the focus on migration-health interaction, which has been accommodating a range of sub-themes such as theoretical issues in migration-induced health outcomes, migration of health professionals and the corresponding health policy implications and development of program strategies linking migration and health, particularly migration and HIV/AIDS.