Before the founding of New China, the average life expectancy in China was only 35 years. In the 1990s, life expectancy doubled to 70 years. At present, the average life expectancy of human beings in the world is 72.6 years old, with the longest being nearly 85 years old and the shortest being 53 years old. China is 77 years old.
So, how old can the ultimate life span of human beings reach?
The aging of human beings is related to many factors, such as the shortening of telomeres of chromosomes and the gradual aging and apoptosis of cells. As long as the time is long, these unfavorable factors will lead people to irreversible decline. Previous studies have shown that human life span is hindered by a key mechanism.
In 1960s, biologist hayflick discovered through research that the number of times human cells divide is limited, and only 60 times at most, which is called the hayflick limit. In every DNA replication process, a small part of telomeres located at the end of DNA cannot be replicated, which will lead to shorter telomeres.
After dozens of cell divisions, telomeres will be consumed. Once telomeres are exhausted, cells lose their ability to replicate and go to apoptosis. In cancer cells, the appearance of telomerase will not cause telomeres to be consumed with cell division, so cancer cells can replicate indefinitely.
Scientists believe that it is precisely because of the existence of Havrick limit that human cells cannot be copied forever, so human life is limited. However, this study has also caused a lot of controversy. At present, the prediction of the ultimate life span of human beings is still inconclusive.
A previous study published in Nature shows that the average life expectancy of human beings is 1 15 years old. However, very few people can live beyond this age, even over 125 years old, which is already an example in China. Our country? Super human? Luo Meizhen lived 127 years, and she was born in 1885. What about Amelia Khan, born a year later? Sai Yiti is still alive, with an age of 134, the highest in the world.
Although some scientists believe that human beings have reached the limit of life and cannot be extended, some studies have pointed out that the maximum life span of human beings may reach 1.60 years, and there is still a long way to go. However, compared with other mammals, human life expectancy may be longer.
Bowhead whales living in Arctic waters are the longest-lived mammals, and they can breed at the age of 90. The longest known bowhead whale lived for 2 1 1 year. Humans who are also mammals, maybe we can live longer, or we can reach more than 200 years old.
Although human life span is generally considered to be limited, we are expected to achieve eternal life in some way. Before the decline of the human body, if consciousness can be stored in the computer, people's thinking ability will still stay in this world, but in different ways.
At present, some scientists are studying? Upload consciousness? The method. With the continuous strengthening of computer computing power, especially the rapid development of quantum computers, the immortality of human consciousness may be realized earlier than the immortality of the body.
If there is an opportunity to preserve people's consciousness in the future, would you like to try?