A leisurely life that begins with the possession of a game character

This chapter has no plot advancement and can be skipped.

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All we know is that at a certain age, nerve cells will age, degenerate, and gradually lose their function, just like an old man who is about to die. They will shrink and become shriveled, no longer flexible, and develop plaques until they die.

The probability is different for different people at this age, but generally speaking, as people get older, the probability increases.

There are not many people with Alzheimer's disease between the ages of 60 and 75. There are many more between the ages of 75 and 90. There are even more between the ages of 90 and 100. There are very few people who are not confused after the age of 100.

According to current observations, human central nervous system cells will almost 200% develop neurodegenerative diseases at around 100 years old. In other words, the maximum lifespan of the human brain and cerebellum is more than 200 years old.

When studying this theory, people who have knowledge of traditional culture will find a very interesting phenomenon, because this scientific theory about human life span actually coincides with the theory in a traditional book of the ancients, "Huangdi Neijing".

In the Yellow Emperor's Canon of Internal Medicine, a classic guide to longevity, there is a conversation between the Yellow Emperor and his minister of medicine, Qi Bo. This ancient legendary emperor was curious about why people older than him "lived to be a hundred years old and were still active", while modern people "are only half a hundred years old and their movements are all weakened".

Qi Bo's answer to this question is that people in ancient times were able to "follow the laws of yin and yang, and be in harmony with the art of numbers", and lived an absolutely healthy life in harmony with nature, so they "lived to the end of their natural life and died at the age of one hundred"; but people today, compared to the ancients, have indulged in depravity and gone against the ways of nature, so they already look old before they are half a hundred years old. In this situation, let alone living past 100, they would be very weak and dilapidated at the age of 60.

In addition, the two lifespans for mortals, 73 and 84, were set based on the natural lifespans of Confucius and Mencius, who were revered as saints. This made a lifespan of years, which was common for people in ancient times, become a luxury for the fallen mortals of later generations.

The same is true in the West. Indians believe that the earliest humans could live for 100 years, and that or years is only the childhood of mankind. It is entirely because of human greed and indulgence, and not practicing the Dharma, that life span has been shortened to years, which is considered the limit for humans.

Philosophers of ancient Greece and Rome firmly believed that the time when things began to grow was the golden age of mankind, with abundant resources and young people. The age of 300 was the end of the human race. After that, mankind's unbridled desires and cruel and murderous nature finally exhausted the power of the earth that gave human life. The land's resources were gradually exhausted, and mankind declined and died sooner.

But modern scientific research shows that the ancient times when everyone was believed to live to be a hundred years old were actually the times when the average human lifespan was the shortest.

From the perspective of the entire historical trend, the average life span of human beings is constantly increasing. As for the life span limit, according to the calculation formula of brain volume, the limit life span of modern people is 90 years old, while the limit life span of modern people is 95 years old, which is still 5 years higher than that of ancient people. Of course, this does not include those who claim to be familiar with the way of health preservation or are particularly favored by God and exceed this limit.

However, average life expectancy is one thing, and limit life expectancy is another. To be precise, the limit life expectancy benchmark is there and has never changed, but the average life expectancy of an era means how likely it is that people of this era can reach this benchmark, and how likely they can exceed this benchmark.

In order to live longer, all kinds of secret techniques and remedies for the pursuit of immortality have been developed. In this vast army of survivalists composed of the immortal cultivation sects and the health preservation sects, we can see how hard people have tried to reach the limit of life as soon as possible.

The frenzy of Qin Shi Huang and Han Wudi in seeking elixirs from overseas and the Tang Dynasty emperors' successive pursuit of elixirs are just a drop in the ocean. In order to gain a longer life, human imagination has gone to great lengths.

In modern times, as the average human life expectancy continues to increase, more scientific research is being conducted to prolong life.

In fact, if there is no issue of immortality, the issue of maximum lifespan is not a problem.

But in the previous assumption, it took such a huge price to make the human life span exceed 150 years. It turns out that there is another level at 200 years old.

And it’s different from the one above. In that case, we already know what happened, and the rest are technical issues.

As for this stage, the problem of the life span of nerves, no one knows why. We are completely confused and in the dark.

So at this point, modern science cannot provide any solution. Whether it is neural stem cells gradually replacing old neural tissue, or electronic brainization, consciousness uploading chips to replace the body at any time, or something else, it all depends on your free imagination.

Anyway, it's not too late to think about this kind of thing in 100 years. The oldest person now will only be 100 years old in another 200 years.

According to current biological theories, there are two limits to human life span. The somatic cell limit is 150 years, but the actual limit is about 120 years.

The limit of nerve cells is more than 200 years old. The first limit has a clear theoretical basis, namely the relationship between telomeres and stem cells. There is a solution, which is telomerase. The rest are technical issues.

The world invests huge amounts of money every year in conquering cancer, which not only treats current patients but also paves the way for eternal life in the future.

The second limit is neurodegenerative diseases, which are currently unknown in theory. There are only some observation results and one-sided and superficial understanding. The treatment methods are also very limited, and they are basically symptomatic.

But there is still huge investment every year because neurodegenerative diseases such as Alzheimer's disease are very common in the real world.

Since the beginning of civilization, human beings have begun their tireless pursuit and exploration of immortality. First, Emperor Qin Shi Huang sent Xu Fu to the sea to seek elixirs, and later Empress Wu Zetian changed her faith from Buddhism to Taoism. Both of them were a vision of seeking immortality, but without exception, they all ended in failure.

In the long history of human development, with the advancement of science and technology and medical level, human life expectancy has been increasing. Taking our country as an example, the average life expectancy has more than doubled from 35 years old in the early days of the founding of the People's Republic of China to 77 years old now. This has also made more and more people firmly believe that humans can live longer and younger.

With the development of modern life sciences, more and more scientists have tried to explain birth, aging, illness and death from a scientific perspective, resulting in the birth of many related theories and doctrines.

The root cause of the birth of these theories, after all, is the eternal goal that people pursue after they have no worries about food and clothing, that is, longevity and immortality.

Tian Qingyong, Liu Xiaoyu and others called and asked their connections to start looking for cameras and surveillance videos along the road in Qingshan Village today. Li Yuan on the side did not make any special movements, as if she was lost in some memories.

This made Zhang Lan feel a little strange. Seeing Li Yuan distracted, he asked casually, "Li Yuan, are you thinking about something?"