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By 2050, the world’s population of people aged 60 years and older will double (2.1 billion). The number of persons aged 80 years or older is expected to triple between 2020 and 2050 to reach 426 million.
2 Οκτ 2010 · The ageing of the world's populations is the result of the continued decline in fertility rates and increased life expectancy. This demographic change has resulted in increasing numbers and proportions of people who are over 60.
Population aging is the process that results in higher average ages and higher shares of the population being old. The threshold age used by the United Nations for defining the old age population is 60 years.
The number and proportion of people aged 60 years and older in the population is increasing. In 2019, the number of people aged 60 years and older was 1 billion. This number will increase to 1.4 billion by 2030 and 2.1 billion by 2050.
Population ageing (or population aging) occurs when the median age of a country or region rises, i.e., when people live longer and have fewer children.
Population ageing is a shift in the distribution of a country's population towards older ages and is usually reflected in an increase in the population's mean and median ages, a decline in the proportion of the population composed of children, and a rise in the proportion of the population composed of the elderly.
Many define old age by setting a universal age threshold, often originating from social policies or norms such as retirement ages, and consider all individuals above this age threshold as older populations. WHO and the UN Population Division commonly apply the age thresholds of age 60, 65, or 70 years.
