Scientists have calculated that humans could theoretically live to 156 years.
That does not mean a new treatment has been discovered, or that people alive today are about to double their lifespans. The figure comes from a mathematical model that removes almost every known aging process and leaves one major source of damage in place.
The researchers wanted to know what would still limit the human body in that imaginary situation. Their answer was the gradual accumulation of somatic mutations, which are DNA changes that develop inside ordinary body cells during a person’s lifetime.
The study was led by researchers at the Skolkovo Institute of Science and Technology and the Artificial Intelligence Research Institute.
The Study Did Not Find a Way to Make People Live to 156
News reports have described the study as evidence that people could live up to 156 years. The wording is understandable, but it leaves out the most important part of the research.
Researchers did not follow a group of people for decades. They did not test a drug, gene therapy or diet. They created a model of human aging and switched off other aging processes one by one.
In that model, somatic mutations were the only remaining cause of decline. The result was a theoretical median lifespan of 156 years.
That is not the maximum age a person could reach. It is not a prediction for babies born today. It is not a forecast for the current oldest people in the world. It is a calculation showing how long the body might last under conditions that do not exist in real life.
How 156 Years Appeared in the Calculation?
Somatic mutations occur as cells divide and repair themselves. Some have little effect. Others can interfere with the way a cell works, increase the risk of cancer or damage the ability of an organ to function.
The body has systems that repair damaged DNA and remove malfunctioning cells. Those systems are not perfect, and their performance changes with age. Small problems can accumulate for decades.
The study found that the effect is not the same in every part of the body. The liver can replace damaged cells more easily than the brain or heart. Neurons and cardiomyocytes, the muscle cells that make the heart beat, usually do not divide and replace themselves in the same way.
That makes them important long-term weak points. A mutation in a liver cell may eventually disappear when the cell is replaced. A mutation in a long-lived neuron or heart cell can remain for years.
The researchers estimated that somatic mutations alone would reduce a theoretical non-aging lifespan from 1,759 years to 156 years. That dramatic comparison is useful inside the model, but it should not be mistaken for a realistic description of human biology.
The Multi-Organ Estimate Was Even Wider
When the researchers combined models for several organs, the predicted median lifespan ranged from 146 to 194 years.
The wide range comes from differences between tissues. Some organs have greater repair capacity. Others depend on cells that must last for most of a person’s life.
| Figure | What It Represents |
|---|---|
| 79.0 years | Life expectancy at birth for the U.S. population in 2024 |
| 81.4 years | Life expectancy for U.S. women in 2024 |
| 76.5 years | Life expectancy for U.S. men in 2024 |
| 122 years and 164 days | Verified human lifespan record held by Jeanne Calment |
| 146 to 194 years | Study’s theoretical multi-organ estimate |
The latest CDC mortality report puts U.S. life expectancy at 79.0 years in 2024. Women reached 81.4 years and men reached 76.5 years.
The oldest fully authenticated person in history was Jeanne Calment of France, who lived to 122 years and 164 days, according to Guinness World Records. No verified person has reached 130, let alone 156.
Longer Life Would Not Automatically Mean Better Health
The study raises a question that is more important than the headline number. If scientists add decades to human life, will those years be healthy years?
Life expectancy measures how long people live on average. It does not show how long they remain independent, mobile or free from serious disease.
A person could survive to 120 while spending many years with dementia, heart failure, cancer or severe frailty. Longer survival without better health would create enormous pressure on families, hospitals, retirement systems and public programs.
Alzheimer’s disease already places a major burden on families, caregivers and health services. Any serious longevity treatment would need to protect memory, movement and organ function, not simply keep the heart beating.
Somatic Mutations Are Only One Part of Aging
The researchers did not claim that mutations explain every reason people grow old and die. Their findings suggest the opposite. Other aging processes would still need to be addressed.
Those processes include chronic inflammation, changes in the immune system, loss of muscle, damage to blood vessels, metabolic decline and the gradual failure of cellular repair systems.
The model removed those problems for the sake of testing one variable. Real bodies do not work that way. Aging mechanisms overlap, influence one another and develop at different speeds in different people.
What the Research Really Tells Us?
The study offers no anti-aging treatment and no practical plan for reaching 156. It gives researchers a framework for asking which organs become the main limits on life when other forms of damage are reduced.
That could help guide future research into cancer prevention, cell repair, brain aging and heart disease. It could also help scientists separate extending life from extending healthy life.
For now, 156 years belongs to a computer model, not to a medical calendar. The real achievement would not be adding another number to the human age record. It would be giving people more years in which they can still think clearly, move freely and live without depending on constant care.
