What is the reason for the short life span of the ancients?

1, the premature mortality rate is high. In ancient times, most people got married at the age of 16 or 17, and most of them were under 20 when they gave birth to their first child, so their children were likely to die young, and many children were weak even when they grew up.

2, poor medical conditions, ancient medical and health care is not developed now, many diseases can not be treated, once a plague or other diseases, there is nothing to do, a plague will cause thousands of deaths.

There are many wars, and there are many and frequent wars in ancient times. Most men were taken to join the army and too many young soldiers died on the battlefield. When the strength is insufficient, even the old, weak, women and children are exiled.

4, malnutrition, poor living conditions The ancients had a family with many children, but the family conditions were poor, and the children's nutrition could not keep up or even starve to death.

5, consanguineous marriage, many people in ancient times were married by close relatives, and close relatives will cause various possible diseases to the next generation.

Extended data:

In ancient times, most people were generally short-lived, even the oldest were only sixty or seventy years old. In history, the life span of human beings is different in different periods.

Few people can survive the war years, and their life expectancy is naturally lower. In peacetime, even in the prosperous time of Kangxi, the people's living standards were high and their life expectancy was naturally long.

In ancient times, there were many factors that affected life span. The first is the economic situation. According to research, the development of social economy has a great influence on the average life expectancy, and the average life expectancy of economically developed dynasties is high, and vice versa.

References:

Baidu encyclopedia-life span