What Is Aging Population

  Population aging is an increasing median age in the population of a region due to declining fertility rates  and rising life expectancy. It's a shift in the distribution of a country's population towards older ages. Most countries have rising life expectancy and an ageing population, which trends that emerged first in developed countries, but which are now seen in virtually all developing countries. This is the case for every country in the world except the 18 countries designated as "demographic outliers" by the UN, UT he aged population is currently at its highest level in human history.The UN predicts the rate of population ageing in the 21st century will exceed that of the previous century.