Fifty-nine is limited to sixty-nine What do you mean?

The limit is the limit of time, that is, life, but that is all calculation and unbelievable.

On the one hand, the length of life is restricted by socio-economic conditions and the level of medical care, which varies greatly in different societies and periods; On the other hand, due to individual differences in physique, genetic factors, living habits and living conditions, individual life spans vary greatly.

The average life index is often used to reflect the length of life, and sometimes the average life is calculated. Life expectancy is one of the important indicators to measure the quality of population.

Human life span

Scientific researchers believe that the life span of human beings is slowly increasing, and this growth has no boundaries. Once upon a time, researchers regarded 120 as the limit of human age, which almost no one could surpass. However, it can be seen from the example that people's life span is extending, and people's life span is likely to be extended indefinitely, and there is no unified upper limit standard.

After analyzing the birth and death in Sweden in the past 240 years, scientists found that the age of the oldest person is on the rise. By the 1990s, the age of the Swedish birthday girl had risen to 109.