General, Research, Technology

Why should a person’s average life expectancy be only 38 years?

According to the latest news voiced byfederal channels, the average life expectancy in the Russian Federation reached its next historic maximum, in 2019, approaching the 73.6 year indicator. Despite the record values ​​for Russia, our country is still significantly behind a number of states such as the United States, Germany and Japan. However, according to some new studies, the “natural” life expectancy for a person is much less than the average achieved by mankind. In accordance with the newly developed method, which allows you to calculate the life expectancy for various species by analyzing their DNA, human life is only 38 years.

Natural life expectancy was assessed by DNA analysis.

How many years does a person live?

Throughout its existence,man strove to stay on the blue planet for as long as possible, one way or another leaving a trace of his life in the person of descendants or any object of cultural heritage. At the same time, according to The Conversation.com, during genetic studies of species with a predetermined life expectancy, scientists found that the duration of a living organism, including humans, largely depends on information captured by nature in our DNA is a natural repository of data.

Difficulty in studying and calculating the averagevertebrate life expectancy is that in all species it varies greatly. So, if the dwarf goby Eviota sigillata lives only eight weeks, then the found Greenland sharks Somniosus microcephalus were able to live for more than 400 years.

Despite the large number of biologicalstudies, the average life expectancy of most animals is still unknown. In order to obtain information on the life expectancy of extinct animals, scientists have developed a special method for calculating the so-called “hours” of DNA, which make it possible to determine the age of the animal. In the scientific world, this method has been recognized as a method of methylation of deoxyribonucleic acid.

See also: Our DNA conceals traces of unexplored species of people.

DNA methylation allows you to “include” certain genes

As is known, DNA methylation allowscontrol gene activity without changing its main sequence. But, despite the fact that DNA methylation gives researchers a hint about the processes associated with aging, scientists still do not use it as the main method for assessing the life span of animals. However, for the study, scientists used 252 genomes of several vertebrate species, which were previously collected and placed in a common database. Thanks to the information received, scientists found that the extinct giant tortoise from the island of Pinta had a life expectancy of 120 years, while the last representative of this species named Lone George died in 2012 at the age of 112 years.

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During the experiment, scientists also found the averagethe life expectancy of Neanderthals and Denisovans, who, being in close connection with modern people, were able to survive only up to 37.8 years. The data of a modern person show that the natural duration of our life is comparable to 38 years, which, however, were able to almost double the achievements of modern medicine.