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The biological limit of human longevity is a mystery, if it exists. But, according to a research conducted by University of Rome La Sapienza and published by the magazine Science this Thursday, 28th, once it reaches the age of 105 years aging is interrupted because the risk of death is constant over the next few years.
This means that after this age it is virtually impossible to say how long people will live. "If there is a biological limit to human life, it has not yet been verified," said ANSA coordinator of the study, Elisabetta Barbi, of the Department of the Sapienza statistics.
The badysis was done between 2012 and 2015, based on data from 3886 people in the age range of 105 years, at a minimum. Researchers have discovered how age influences the risk of death, but that at a certain point (after the age of 105), this chance stagnates.
"For example, at age 50, the risk of dying next year is three times higher than at the age of 30. And when we reach the age of 60 or 70, the chances of dying double every eight years. you have the chance to live 100 years, your chances of arriving at the next birthday are 60%, "says the report.
Another data from the research is that "for younger generations of birth, mortality levels are slightly lower," Elisabetta said. A similar study on the risk of death at more extreme ages has been made with other animal species, such as insects, suggesting that there is an evolutionary explanation for the disease. interruption of old age.
The discovery of the aging threshold, according to Elisabetta, "not only gives a clear and certain answer on mortality rates, but is crucial for understanding mechanisms based on human longevity and for the future development of mortality theories. aging ".
For her, it is the first "confirmation of the role played by selective survival, that is, the survival of individuals less fragile or vulnerable to disease or death."
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