How to calculate life expectancy?

The calculation method of life expectancy is to follow up a group of people born at the same time, record their deaths at all ages until the end of the last person's life, and then calculate the life expectancy of the population according to the number of people who live to all ages.

1, planning life expectancy target

In the first four years of the 13th Five-Year Plan, the average life expectancy in China increased from 76.34 years to 77.3 years. It is estimated that the average life expectancy can be increased 1 year during the Tenth Five-Year Plan period, and the goal of reaching 79 years in 2030 proposed in the Outline of Healthy China 2030 can also be promoted.

2. Ways to improve life expectancy

Proper exercise can promote the metabolism of the body, and also keep the ability of blood circulation normal, so that all organs of the body can maintain a normal state. Old people can usually go out for a walk with friends, or they can dance a square dance to keep their mood happy.

Emotion can also affect people's health. A person with a positive attitude always looks more energetic and stable.

The difference between actual life expectancy and life expectancy and its influencing factors;

1, with different properties.

Life expectancy is one of the three core indicators of the United Nations Human Development Index, which reflects the overall health level of a country or city. The average life expectancy is the average life expectancy, which is the average number of years that people can live after the exact age of X under a certain age mortality level.

2. Different characteristics

Life expectancy reflects the quality of life of a society. Calculate the age-related mortality, but in fact the mortality is constantly changing, so the average life expectancy is a hypothetical indicator. Life expectancy is an index to measure the health level of residents in a country, a nation and a region.

3. Influencing factors

The length of life is restricted by two aspects. On the one hand, social and economic conditions and medical care level limit people's life span, so the life span varies greatly in different societies and different periods. On the other hand, due to personal differences such as physique, genetic factors and living conditions, everyone's life expectancy is also very different.