German scientists have named the age of the onset of biological aging

The functioning of ribosomal DNA— a part of the genome necessary for cell life, is maintained by the body only until puberty, after which the mechanisms of aging are triggered. This was reported in the magazine Aging-US.

The researchers analyzed blood samples from 280 people between the ages of birth and 18. They evaluated two indicators: the number of rDNA copies and the level of their methylation, a chemical label that "turns off" the activity of the gene.

"Our data show that in the tissues of young people, the state of active rDNA is maintained at the molecular level. This may be part of a natural mechanism for preserving cellular youth," the authors of the work cite "Газета.Ru ".

It turned out that with age, there are fewer active copies, and the level of methylation is higher. According to scientists, such changes serve as a reliable biomarker of cellular aging.

The results of the study confirm the idea that biological aging is not a continuous process and it begins after the body is ready to reproduce. Scientists specify: the discovery may change the approach to the fight against aging.

Signs on the face: Russian ethnic groups with a high risk of skin aging are named

Such a premature process can cause melanoma and other cancers, experts have warned.

Earlier, on October 7, an international group of scientists concluded that creative hobbies — from Argentine tango to guitar playing — can slow down brain aging at the molecular level. Using machine learning algorithms, scientists analyzed the brain activity of 232 representatives of creative professions and amateurs — from artists and dancers to video game players. The result was unequivocal: the higher the skill level, the slower the brain aged.

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