Research shows that the increase in life expectancy for humans is not due to the increase in the age limit for longevity.
The average life expectancy of humankind is steadily increasing, and the words 'record the highest average life expectancy ever' are jumping on the paper every year. From these reports, I get the impression that 'human life continues to grow,' but a new joint research team consisting of scientists from a total of 14 countries said, 'The increase in life expectancy has reduced the number of people who die prematurely. Announced the research result 'Cause'. It reveals the problem of 'magic of numbers' in statistics.
The long lives of primates and the'invariant rate of aging' hypothesis | Nature Communications
We cannot cheat aging and death
https://www.sdu.dk/en/nyheder/forskningsnyheder/du-kan-ikke-snyde-doeden
Sweeping Analysis Concludes There's No Cheating Old Age | Duke Today
https://today.duke.edu/2021/06/sweeping-analysis-concludes-there%E2%80%99s-no-cheating-old-age
We Can't Escape Aging Even With Greater Life Expectancy, Scientists Warn
https://www.sciencealert.com/greater-life-expectancy-doesn-t-change-our-biological-destiny-scientists-say
According to one theory, the average life expectancy of humankind increased from 40 to 70 years from the 1850s to the present day. In fact, the official announcement of the Ministry of Health, Labor and Welfare of Japan records that the average life expectancy increased significantly from 50 to 80 years from 1947 to the first year of Reiwa.
1 Life expectancy of major ages
(PDF file) https://www.mhlw.go.jp/toukei/saikin/hw/life/life19/dl/life19-02.pdf
39 researchers from 14 countries, including Fernando Corcello of the University of Southern Denmark and Susan Albert of Duke University, have announced the hypothesis that aging rates in species do not change in primates. is. The research team was recorded in the 17th and 20th centuries, including 'Life Tables 1751 to 1759 in Sweden', ' Life Tables 1813 to 1815 in the Republic of Trinidad and Tobago ', and 'Life Tables from 1985 to 2000 in the Hazua' In addition to the life table of human beings, we conducted a survey to determine the life span equality (an index of how much life span is dispersed) from the life table of 30 species of primates such as monkeys, sheep, and gorillas. I did. Lifetime equality is an indicator that the smaller the variability in age at death, the higher the equality of life, and the greater the variability in age at death, the lower.
As a result of this survey, it was found that life tables with a short life expectancy tend to have low life equality, and life tables with a long life expectancy tend to have high life equality. In other words, in a society with many premature deaths, the age at death varies widely, and therefore the average life expectancy becomes short. On the contrary, in a society with few premature deaths, the age at death varies little and the average life expectancy increases. Means Furthermore, it was confirmed that this tendency has considerable reproducibility in primates other than human beings.
From the above trends, 'The fluctuation in life expectancy in primates is mainly due to the death of infants, children and young adults. In other words, life expectancy is determined not by the aging rate but by the proportion of individuals who die prematurely. It is said that a conclusion can be obtained. In addition, in the mathematical model created from the life table surveyed, the relationship between life expectancy and life expectancy is not explained when the aging rate is changed, while the average when the early mortality rate is changed. The research team says that the very good explanation of the relationship between life expectancy and life expectancy led to the conclusion that 'species do not change the rate of aging.'
'We can't slow down the rate of aging. What we can do is prevent babies from dying,' said Albert. 'Medical science is advancing at an unprecedented pace and may succeed in'slowing aging', which has never been achieved in the evolution of living organisms,' said Corcello.
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