The average human lifespan can be calculated. There are even special formulas that are designed specifically for this purpose. When calculating human life expectancy, it turns out approximately how old a person should live.
Factors
However, a number of additional factors should be taken into account, such as the state of he alth, education, social conditions in the country or region in which this person lives. Analyzing the collected information, experts predict the time at which he will die.
It is also possible to compare life expectancy at birth for people living in different geographical areas (both within the same country and internationally). With this information, professionals have access to demographic and population growth information around the world.
Demographic indicators are collected at the United Nations. The UN emphasizes that life expectancy is one of the main factors that serve to designatehuman development index of individual peoples.
Calculation tables
Information on age, sexual and maternal mortality can be found in tables that include life expectancy that relate to a specific human population.
When creating such tables, real data on births and deaths in a population indicated by region, sex and age are taken into account. Mathematical formulas make this information accurate in the probability of death calculations.
What you need
Before calculating life expectancy, specific statistics on demographic variables must be collected. The calculations are based on three main criteria: gender, age, region. However, the most commonly used measure is life expectancy at birth.
Regular recalculations are recommended over the next three years. This follows from the method of tabulation and calculation of life expectancy at birth, which are extremely dependent on the increase or decrease in the number of deaths in a particular area. And this is not a constant value. In addition, it is not recommended to perform calculations for specific groups of people, such as a city or town. Here the situation may change from year to year.
Calculation by generation
In the case of a hypothetical generation, life expectancy at birth is calculated for representatives of another generation, with data for a specific year or period. If athe current generation is taken, and the years of life of this group are common, it is possible to analyze the number of lived years of each of the members of this group.
Math calculations
The math starts by calculating the total number of years that a given generation has lived, starting at a specific age (x). The analysis is carried out most often from the moment of birth, x=0. The general formula for calculating life expectancy at birth looks like this:
ex=Tx/lx
- Tx is the total number of years a person has experienced from age x.
- lx is the number of people who survived and reached exactly age x.
In addition, you need to calculate another indicator in which you need to indicate the total number of years lived from a specific age.
Life expectancy comparison
There are many applications for calculating life expectancy for each person, as well as many add-ons. All that is needed is just to indicate the date and country of birth, as well as the gender of the person.
Some databases make it possible to compare the life expectancy of people originating from different countries, and also provide the ability to determine the approximate date of death.
People all over the world can use such programs. Everyone can find out if he lives in a country where people live to old age, or maybe die young. Such figures are approximate and subject to debate for various reasons.
Modern trends
Science is looking for ways that would allow a person to live forever. Even if mankind is not yet ready for immortality, the average life expectancy may soon exceed 100 years in some regions.
Life expectancy in developed countries is normally 79 years for men and 83 for women, although the happiest of us can live as long as 115 years. In April last year, a certain Emma Morano died at a respectable age, she was 117 years old. And in 1997, a French woman who lived for 122 years left.
Humanity is living longer
Of course, this trend does not apply to all countries. The life expectancy of a person varies greatly depending on the surrounding conditions, the state. It also affects a person's life path. For example, the most common causes of death - heart attacks, strokes, cancer - develop under the influence of prolonged stress and a sedentary lifestyle. Life expectancy is highest in developed countries - European countries, the United States of America.
Recent studies, however, suggest that there is no upper age limit at all. In other words, humanity in theory is able to live forever - at least in theory for sure. Researchers from McGill University have been analyzing the life expectancy of the oldest citizens of the United States, Great Britain, France and Japan every year since 1968. They transmit information about their observations, according to which it is not known how many years a person can live, what hisprimordial potential.
If there really is an upper limit to human age, no one has yet reached it. Given global trends, life expectancy can be expected to continue rising in the future.
The three main factors affecting life expectancy are neonatal mortality, infrastructure development, sanitation and nutrition. Scientists from McGill University argue that the moment when the development of civilization allows us to fully regulate these three factors, our life will last much longer.
