Thursday, July 13, 2017
Here are some excerpts from the story about the study:
new measures of aging with probabilistic projections from the United Nations to scientifically illustrate that one’s actual age is not necessarily the best measure of human aging itself, but rather aging should be based on the number of years people are likely to live in a given country in the 21st Century.
The study also predicts an end to population aging in the U.S. and other countries before the end of the century. Population aging – when the median age rises in a country because of increasing life expectancy and lower fertility rates – is a concern for countries because of the perception that population aging leads to declining numbers of working age people and additional social burdens.
You'll recall the three cohorts of "old" 65-74, the "young old", 75-84, the old, and 85+ the old-old. According to this study, "[t]raditional population projections categorize “old age” as a simple cutoff at age 65. But as life expectancies have increased, so too have the years that people remain healthy, active, and productive. In the last decade, IIASA researchers have published a large body of research showing that the very boundary of “old age” should shift with changes in life expectancy, and have introduced new measures of aging that are based on population characteristics, giving a more comprehensive view of population aging."
The study focuses on the US, China, Iran and Germany. The study is available here.