Population ageing is an increasing median age in a population because of declining fertility rates and rising life expectancy. Most countries have rising life expectancy and an ageing population, trends that emerged first in developed countries but are now seen in virtually all developing countries.

What is meant by Ageing population?

Population aging refers to changes in the age composition of a population such that there is an increase in the proportion of older persons. Demographers use age/sex pyramids to illustrate the distribution of populations across all age groups.

What causes an Ageing population?

Introduction: Demographic changes since the second half of the last century have led to an aging population, and this is considered an important economic and social problem worldwide. ... The two main generally accepted underlying causes of aging populations are longer life expectancy and lower fertility.