Longevity in Historical and Biological Perspectives

The history of human longevity is often misunderstood. In everyday conversation, we often hear that living to the age of 70, 80, or even 90 is a special achievement of the modern world. Media, popular books, and even some academic discourses sometimes portray longevity as a new gift of the 20th century, the result of advances in medicine, sanitation, and nutrition. Such claims are not entirely wrong, but neither are they entirely true. The reality is more complex: humans have shown the capacity to live long lives since ancient times, and old age has always been part of civilization’s journey.

If we look into historical records, we find that great figures across various eras not only lived long lives but also remained active and productive in old age. In the United States, Thomas Jefferson died at 83, Benjamin Franklin reached 84, and Aaron Burr lived to 80. These facts highlight that although average life expectancy at the time was low, some individuals still managed to reach old age. Statistical data often mislead in reading this reality. When we hear that life expectancy in the 18th or 19th century was only about 40 years, that does not mean people rarely lived beyond 40. Rather, the number was heavily skewed by high infant and child mortality. Once someone survived the vulnerable early years, their chances of reaching 70 or 80 were actually quite high (Sánchez-Romero et al., 2017).

This pattern can be traced much further back. Ancient Greece offers us the example of the great philosopher Plato, who lived into his 80s, while Sophocles even reached his 90s. In China, Confucius died at the age of 72, an extraordinary achievement for the 5th century BC. In Europe, Michelangelo continued working until the age of 88, and Isaac Newton died at 84 after devoting his life to science. These facts show that old age was not an anomaly in history but a real part of the human journey.

From a scientific perspective, human longevity can be explained through evolution and biology. Kaplan and Robson (2002) explain that human intelligence and long lifespans evolved together in the course of evolution. Longevity provided adaptive advantages: older individuals could share knowledge, care for grandchildren, and strengthen the social fabric of communities. In evolutionary terms, longevity was not mere coincidence but part of humanity’s survival strategy as a species. This concept is known as the “grandmother hypothesis,” which emphasizes the crucial role of elders in supporting subsequent generations.

From the perspective of molecular biology, modern research shows that genetics and epigenetics play a key role in determining longevity. Ciaglia et al. (2025) highlight how changes at the DNA level and epigenetic mechanisms can influence aging. Some individuals carry genetic variations that allow them to repair cellular damage more effectively than others, giving them greater chances of reaching advanced age. Epigeneticschanges in gene regulation without altering the DNA codealso plays an important role, as lifestyle, nutrition, and environment can affect the expression of genes related to aging.

On the other hand, classical biological theories also point out the limits of longevity. Kirkwood (2005), with his disposable soma theory, explains that the human body is designed to balance energy between reproduction and maintenance. The body does not invest maximally in cell repair because resources are limited, making aging a natural consequence of biological survival strategies. In other words, the human body indeed has the capacity for long life, but also contains inherent limits within its biological systems.

The combination of historical evidence and biological explanation confirms that longevity is not a new phenomenon. For thousands of years, humans who survived the vulnerable phases of life could already live long, and even remain productive in old age. What distinguishes modern times from the past is not the capacity to live long, but the number of people able to do so. If in the past only a small portion of the population lived beyond 70 or 80, today that chance is far more widespread thanks to improvements in public health.

However, it is important to note that while modern science has broadened the distribution of longevity, human biological limits remain. Vaupel (2021), from a demographic perspective, shows that while average life expectancy continues to rise, the maximum human lifespan has not increased dramatically. Most modern humans live longer than their ancestors, but it is still extremely rare to surpass 120 years. This demonstrates that longevity has always been part of human potential, and modern progress has merely expanded access rather than creating something entirely new.

Thus, when we reconsider the claim that old age is a unique achievement of the modern era, we find that such a claim oversimplifies reality. Longevity has always been present in human history, rooted in evolution, genetics, and social structures. The only difference lies in its context: in the past, it was the privilege of a minority, while today it has become an increasingly common experience.

Modern Challenges – Between Hope, Reality, and Illusion

As we entered the 20th and 21st centuries, narratives about longevity have been increasingly linked to advances in medicine, pharmaceuticals, nutrition, and hygiene. Undeniably, modern interventions have expanded the opportunity for long lifenot only for a select few but for populations across the globe. Yet behind the celebration of ever-rising life expectancy figures lies a paradox worth examining. Today’s longevity comes with new challengeschronic diseases, health inequalities, and exaggerated myths about the possibility of radically extending human life.

From a public health perspective, Gianfredi et al. (2025) emphasize that rising life expectancy brings significant consequences for healthcare systems. Aging populations tend to experience increases in degenerative diseases such as Alzheimer’s, cancer, diabetes, and cardiovascular conditions. Longevity is indeed an achievement, but the quality of life in old age often declines. The term healthy aging has emerged to stress that long life alone is insufficient; what matters is ensuring that old age is accompanied by adequate physical and mental well-being. In other words, what was once considered an achievementmerely living longerhas now shifted into a challenge of maintaining quality of life in later years.

At the same time, debates also arise over claims of radical life extension. Some scientists and futurists argue that humans could live to 150 or even 200 years with the help of biotechnology, genetic engineering, and artificial intelligence. However, critical analysis from Nature Aging (2024) shows that such claims are often overly optimistic. Based on biological and demographic data, the possibility of extending human life to such extremes remains highly unlikely. Even if technology improves health and slows aging, the maximum human lifespan remains bound within certain biological limits. This view underscores that the “miracle” of longevity is nothing new, and the idea of “immortality” belongs more to the realm of fantasy than scientific reality.

Another factor to consider is the uneven distribution of longevity across the world. Vaupel (2021) highlights that while global life expectancy has increased, vast disparities remain between developed and developing nations. While much of Europe and Japan can expect to live beyond 80, many countries in Sub-Saharan Africa still struggle with life expectancies under 65. This means that the narrative of a “longevity revolution” reflects the experience of wealthy nations more than a universal reality.

In biological terms, Ciaglia et al. (2025) point to the growing recognition of genetics and epigenetics as keys to longevity. While healthy lifestyles play an important role, there are also inherited factors that determine why some people live longer than others. Yet this understanding raises new dilemmas: will the future of longevity be reserved for those with access to cutting-edge medical technology, or can it be shared equitably among all humans?

Kirkwood (2005) stresses that the human body has biological limits that cannot simply be erased. His disposable soma theory argues that aging is the consequence of a biological strategy that prioritizes reproduction over long-term maintenance of the body. This means that while modern science may slow aging, it cannot fully eliminate the basic biological processes that shape human existence. From this perspective, aging is not a “disease” to be cured but an integral part of human biology.

Sánchez-Romero et al. (2017) show that throughout history, many individuals lived to old age, albeit in smaller numbers. Their findings remind us that the modern narrative portraying longevity as a “new achievement” is misleading. What has changed is not the existence of long lives, but their scale of distribution: in the past, longevity was reserved for a few, whereas today billions have the chance to experience it. Still, this distribution is uneven. Stark inequalities persist between countries, regions, and even social classes within the same nation.

Thus, we must be cautious in interpreting data on longevity. Yes, life expectancy has risen dramatically since the 1900s. But this increase reflects, more than anything, the success of reducing early mortalitynot the “discovery” of longevity itself. Vaupel (2021) emphasizes that modern progress has not created new lifespans but rather allowed more people to reach the biological potential that has long existed.

In this sense, the modern era presents a mixture of hope and illusion. Hope, because billions of people now have the chance to live longer than their ancestors. Illusion, because some believe longevity is an exclusive gift of modernity, or even cling to futuristic promises of “immortality.” The reality, however, as shown by history, biology, and demography, is that longevity has always been part of the human conditionwhat has changed is the breadth of access to it.

Reflection: Longevity as Reality and Responsibility

If we close this long journey by looking back, it becomes clear that old age is not something born of the 20th or 21st century. History, biology, and demography all demonstrate that humans have had the capacity for long life since ancient times. From Plato to Newton, from Jefferson to Michelangelo, great figures have shown that longevity is not a new phenomenon but part of the human story throughout the ages. What has changed is not its existence, but the number of people able to reach it.

In the modern era, however, longevity comes with new responsibilities. Gianfredi et al. (2025) emphasize that aging populations pose major challenges for public health. If in the past old age was synonymous with wisdom and social authority, today it also means a rise in chronic disease, greater demand for intensive healthcare services, and heavier socio-economic dependency. Longevity has become a mass reality, and with it comes a collective responsibility: how to ensure that the added years of life are years worth living.

At the same time, claims of radical life extension must be viewed with skepticism. An article in Nature Aging (2024) reminds us that although biomedical technologies continue to advance, human biological limits remain. The human body cannot be forced to live without end, because aging is part of the biological strategy embedded in our genetics (Kirkwood, 2005; Ciaglia et al., 2025). Myths of immortality often reflect human fear of death more than scientific reality. Thus, rather than chasing the illusion of eternal life, it may be wiser to focus on making old age healthier, more meaningful, and more dignified.

Vaupel (2021) reminds us that the great shift lies not in the creation of longevity, but in its democratization. Whereas in the past only a few people managed to reach 70 or 80, today billions can do so. Yet this democratization is far from complete. Sánchez-Romero et al. (2017) show that inequalities persist, both between nations and within them. While some communities live longer with access to good healthcare, others remain trapped in cycles of infectious disease, malnutrition, and poverty that erode life expectancy.

The remaining question is no longer whether humans can live long, but how we interpret longevity itself. Is it merely a number in demographic statistics? Is it a medical achievement? Or is it, as our ancestors believed, a phase of life carrying social and moral responsibility? Kaplan and Robson (2002) show that longevity became part of human evolutionary strategy because it allowed older generations to care for and teach the younger. If so, then our task today is not simply to extend life, but to ensure that social roles and human values continue to thrive within those extended years.

Thus, the myth that old age is a “modern miracle” must be dismantled. Longevity is not a new achievement but part of humanity’s legacy since the dawn of civilization. What is truly new is the wider scale of accessand the social, medical, and ethical challenges that accompany it. Longevity is a gift, but also a test: will we turn it into a time of wisdom, solidarity, and contribution, or allow it to become a burden that deepens inequality?

History offers us one essential lesson: longevity has always existed, but the meaning of longevity has always been shaped by its social context. Now, in the 21st century, our challenge is not to create long lifefor it has long been with usbut to give meaning to long life for the billions of people who will experience it.

References

Ciaglia, E., et al. (2025). The genetic and epigenetic arms of human ageing. Frontiers in Genetics. https://pmc.ncbi.nlm.nih.gov/articles/PMC11762130/

Gianfredi, V., et al. (2025). Aging, longevity, and healthy aging: The public health view. International Journal of Environmental Research and Public Health, 22(3), 1205. https://pmc.ncbi.nlm.nih.gov/articles/PMC12006278/

Kaplan, H., & Robson, A. J. (2002). The emergence of humans: The coevolution of intelligence and longevity. Proceedings of the National Academy of Sciences, 99(15), 10221–10226. https://doi.org/10.1073/pnas.152502899

Kirkwood, T. B. L. (2005). Understanding the odd science of aging. Cell, 120(4), 437–447. https://doi.org/10.1016/j.cell.2005.01.027

Sánchez-Romero, M., Riffe, T., & others. (2017). How many old people have ever lived? Demographic Research, 36(54), 1667–1702. https://www.demographic-research.org/volumes/vol36/54/36-54.pdf

Vaupel, J. W. (2021). Demographic perspectives on the rise of longevity. Proceedings of the National Academy of Sciences, 118(9), e2019536118. https://www.pnas.org/doi/10.1073/pnas.2019536118

Implausibility of radical life extension in humans. (2024). Nature Aging. https://www.nature.com/articles/s43587-024-00702-3