In 2020, the average life expectancy in the United States will be 77.0 years, which is 65,438+0.8 years lower than that in 2065,438+09. From 20 19 to 202 1, the average life expectancy of Americans decreased by 2.7 years. Among them, the average life expectancy of men decreased by 3. 1 year to 73.2 years; The average life expectancy of women has been shortened by 2.3 years to 79. 1 year.
Human life span
Scientific researchers believe that the life span of human beings is slowly increasing, and this growth has no boundaries. Once upon a time, researchers regarded 120 as the limit of human age, which almost no one could surpass. However, it can be seen from the example that people's life span is extending, and people's life span is likely to be extended indefinitely, and there is no unified upper limit standard.
After analyzing the birth and death in Sweden in the past 240 years, scientists found that the age of the oldest person is on the rise. By the 1990s, the age of the Swedish birthday girl had risen to 109.
The length of life is influenced by many factors. The strength of innate endowment, acquired training, living conditions, social system, economic conditions, medical and health conditions, etc. Will have an impact on human life.
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