STUDY MODELED A 156-YEAR HUMAN LIFESPAN LIMIT
Researchers calculated a theoretical human lifespan limit of 156 years if random DNA mutations were the only aging process left.
The study, titled “Somatic mutations impose an entropic upper bound on human lifespan,” was published June 25, 2026, in npj Aging. Researchers from the Skolkovo Institute of Science and Technology and AIRI did the work, and the authors include Evgeniy Efimov, Vlad Fedotov, Leonid Malaev, Ekaterina Khrameeva and Dmitrii Kriukov. The institute said the project was supported by a Russian Science Foundation grant.
Efimov explained what the team found in the institute’s research summary.
“The key finding of the study is the discovery of substantial differences between tissue types. Neurons and cardiomyocytes, which lack the ability to divide, turned out to be the main limiting factor: when all other causes of aging are eliminated, somatic mutations alone reduce the theoretical median lifespan from 1,759 years (for a hypothetical non-aging human organism) to 156 years. At the same time, tissues with high regenerative capacity — such as the liver — can maintain their function for thousands of years through continuous cell renewal, effectively neutralizing the negative impact of mutations,”
How the model worked
The team built a multi-stage mathematical model to see how lifespan changes as aging mechanisms are added or removed.
A hypothetical human body with no aging mechanisms at all came out with a median lifespan of 1,759 years. Add back only somatic mutations, and that number collapsed to 156.
Somatic mutations are random DNA changes that pile up in body cells over a lifetime. They are not the inherited kind passed down through the germline, Yahoo News and Upworthy reported.
The weak spots are cells the body cannot easily replace. Neurons and cardiomyocytes, the heart’s muscle cells, do not divide or are not readily swapped out, so the damage sticks.
Tissues that regenerate, like the liver, can offset the damage by renewing their cells, My Modern Met reported.
What outside researchers said
Jordan Weiss, an assistant professor and aging researcher at NYU Grossman School of Medicine, tied the finding to how people actually decline.
“The conditions that cost people their independent, healthy years—such as dementia and heart failure—fall heavily on precisely the tissues that cannot regenerate. So the gap between how long people live and how long they stay well is not one general breakdown of the body. It is concentrated in the organs that have no way to replace worn‑out cells.”
Weiss also said where he thinks the effort should go.
“If renewable organs already tolerate decades of DNA damage without much trouble, there is little to gain from protecting them further. The harder and more valuable problem is preserving the DNA of brain and heart cells.”
Egle Pavyde, a pharmacist and regenerative medicine researcher, saw the result as one piece of a bigger picture.
“It proves that DNA damage accumulating in our cells is one of the reasons we cannot live indefinitely but also shows that our bodies are complex systems and that it is only one piece of a much larger puzzle,”
Yahoo/Upworthy listed other aging processes that sit outside this model, including mitochondrial dysfunction, epigenetic drift, telomere shortening and loss of proteostasis. It also reported that no treatment currently reverses somatic mutation damage in human cells.
What the number does not mean
The 156-year figure is a modeled scenario, not a promise. Donga Science reported that the work is theoretical, does not show people can live to 156 today and offers no clinical treatment to get there.
For now, the advice stays practical. Yahoo/Upworthy passed along health habits it attributed to the NIH: not smoking, keeping a healthy weight, getting good sleep, staying current on recommended vaccines, getting preventive cancer screenings, and treating high blood pressure and high cholesterol.
Luigi Ferrucci, scientific director of the NIH’s National Institute on Aging, said of those habits: “We don’t need a magic pill. The magic pill is already here.”
On October 16, 2026, Skolkovo’s research summary described the study’s broader multi-organ model, which estimated a theoretical median lifespan of 146–194 years if other reversible aging processes were eliminated.
