Therefore, both princes and ordinary people hope that they can live a long life, especially in today's world of flowers and flowers, we are reluctant to leave.
Fortunately, human life expectancy is not fixed. This is not a fixed number. For example, in the primitive wild times, the average life expectancy of human beings was only about 15 years old. In the farming era, the average life expectancy of human beings (that is, BC) was about 20 to 25 years old. Life is so short that I think I will die before I live.
By 1850, the average life expectancy of human beings has reached about 40 to 45 years old, which is double that of 2000. Why does human life span increase?
The main reason is that the early life span of human beings has not touched the limit of their own lives, and the reason for the high mortality rate is either natural disasters or man-made disasters or diseases.
Now living conditions and medical conditions have made great progress, and the average life expectancy of human beings has almost doubled, reaching more than 70 years old. (China 75, higher than the world level. The world level has been lowered by a knot in Africa and South America).
Jeanne Louise Calment, the oldest person in the world, lived 122 years old 164 days, and Kalman died in arles on 1997. Although we don't know yet, at least we don't fully know why organisms age or even die, so we have no real way to accurately predict the ultimate life span of human beings, or to extend the life span of human beings, because we haven't found the essential reason, let alone solved the problem. But we have proved that a healthy diet, proper exercise and a happy mood can effectively prolong people's life.