How long can a human life span be?

Generally speaking, when people reach the age of 25 or so, the growth reaches its peak, and then it is to go downhill, as for when it is the end, it depends on how steep the slope of the downhill is, if the slope is small, the life is long, otherwise it is short, it depends on the environment, psychological factors, dietary conditions and so on.

The actual lifespan of a human being should be between 120 and 150.

But because of environmental factors and personal living conditions. Generally around 80.

In ancient times, the short life span was due to poor ability to provide medical care and the living environment (to protect against variables that are harmful to the body).

The increase in modern life expectancy is an improvement in these aspects. But the improvement is a little small. There are many behaviors that harm the body in modern society.

Smoking, alcoholism, electronics, air pollution, abnormal weather, etc. are all hazards.

But remember that there is a place where people live a long life. You can live to be over 90 by smoking a lifetime. There is even more than 110 average life expectancy.

Well, this can only be said to be a gift from God. (DNA determines part of their fate.)

The average life expectancy of Chinese is 75 years old, and it should reach 80 years in the next 10 years. No one can know how long any one person will live. But we can use statistical methods to ** the average life expectancy of a certain population, which is called life expectancy.

If we want to know the life expectancy of a certain population, the most direct and accurate way is to calculate the average life expectancy after all of them have died. But this is unrealistic, because it means that we have to wait more than a century before we can do statistics. In practice, demographers use an indirect, less accurate but much simpler approach to statistics.

For many years, many countries** have counted the number of births and deaths per year, as well as the age of the deceased. The census also counts the number of people still alive at each age. Taken together, this information allows demographers to calculate the risk of death and the probability of surviving to the next year for people of each age.

This probability of survival forms a "life table" that shows an estimate of the life expectancy of people of any age. This estimate is known as "cyclical life expectancy" and varies from year to year. The average life expectancy of Chinese in 2001 was years, compared with years in 1981, an increase of 4 years in 20 years.

Before the founding of New China, the average life expectancy of Chinese was only 35 years. According to World Population Prospects: The 2000 Revision, published by the United Nations Population Branch, the average life expectancy in developed countries is now 75 years, while in developing countries it is 63 years.

This shows that China's average life expectancy is close to the level of developed countries, and some regions have exceeded the average level of developed countries, with years for men and years for women.

The average life expectancy of people is of course longer than it was before and after liberation; Now the environment is being damaged like never before; The garbage siege is estimated to add modern life-shortening factors such as car accidents and kidney theft! There are also things like high blood pressure and diabetes! The life expectancy of human beings should be decreasing.

What is the limit of human lifespan? The 116-year-old was recognized as a world record.

What is the approximate lifespan of a human being?