The oldest person on record in the world is the French old lady Jeanne Kalman, who died at the age of 1997.
In 275 BC, the average life expectancy of people was 26 years old; By 1900, the average life expectancy of people has risen to 49 years; The unprecedented prosperity of material civilization in the past 50 years has increased people's average life expectancy by nearly 20 years.
Extended data:
Factors affecting life span
1, gene
Genetic genes are very important for human health and longevity. Just like playing cards. Genes are the hands you hold. All the cards were drawn from your father and one card was drawn from your mother. If you draw a good hand, you may win no matter how bad your skill is, but if you draw a bad hand, no matter how good your skill is, you will lose.
2. Stem cells
The essence of human aging is cell attenuation, which is mainly caused by stem cell attenuation. Mature somatic cells will die due to aging or injury, and their substitutes need to be produced at any time, and stem cells are the source of these substitutes.
In the process of human development, they will remain naive and have differentiation potential for a long time. When they are stimulated by some special physical and chemical stimuli, they will become active, begin to proliferate and differentiate, become the cell types needed by the body, and play their due role.
3. Living habits
Although people can live a long life, it doesn't mean that the habits formed after tomorrow have no influence on people's life span at all. In addition to living habits, the living environment will also affect people's life span.
People's Network-Is there a limit to human life?