Past several decades, the world have witnessed some astonishing global health, success story-from reducing child and adult mortality, while increasing life expectancy of the people. Many developing and developed nations have had decades to adjust to their changing age structures. Reducing severe mortality from disease and health conditions is one key to holding down health and social costs. Reducing the child mortality and increasing the life expectancy is achievements of local label accessibility and availability of health care services. The improvement in life expectancy and decline in age-specific death rate among the elderly are particularly due to the improvements in public health and medical advances in the prevention of many fatal infectious diseases.