WHO is the directing and coordinating authority for health within the United Nations system. It is responsible for providing leadership on global health matters, shaping the health research agenda, setting norms and standards, articulating evidence-based policy options, providing technical support to countries and monitoring and assessing health trends.
The materials found on this site are designed to assist health professionals in learning about and engaging in activities of CDC's Healthy Aging Program and The Healthy Brain Initiative to promote independence and wellbeing. Major topics on this site include:
The CIA is has a lot of public information on longevity and mortality rates, including international statistics. Life expectancy at birth compares the average number of years to be lived by a group of people born in the same year, if mortality at each age remains constant in the future. Life expectancy at birth is also a measure of overall quality of life in a country and summarizes the mortality at all ages.