For most of human history, reaching the age of 100 was considered rare and extraordinary. Today, however, due to scientific and medical advancements, this is becoming increasingly common. Over the past century, life expectancy has risen significantly, and it is now projected that many individuals born in developed countries may live to 100 and beyond. This shift brings with it not only the question of living longer, but also how to make those extended years meaningful and fulfilling. Thus, the issue is no longer merely about “adding years to life,” but rather about “adding life to years” (Lang & Rupprecht, 2019; Freund et al., 2009). At this point, the concept of longevity—which has become more prominent since the early 2000s and now influences many aspects of our lives—comes into focus. In this article, we will explore what longevity means and its potential effects on human psychology.
One of the key concepts highlighted in longevity research is “subjective age,” rather than chronological age—that is, how old a person feels. Research shows that individuals who feel younger than their actual age tend to have better physical health, higher cognitive performance, and greater life satisfaction (Mitina et al., 2020). This is not merely an optimistic outlook; it also functions as a psychological adaptation to counter negative stereotypes about aging. In fact, individuals with a more positive attitude toward aging have been found to live, on average, 7.5 years longer (Fernández-Ballesteros & Sánchez-Izquierdo, 2019; Johansson & Bjälkebring, 2015).
From a cognitive perspective, aging is not simply a process of decline, but also one of transformation. While younger individuals tend to excel in analytical thinking and attention to detail, older adults shift toward focusing on the “gist”—the broader meaning and overall structure of events (MacGregor, 2003). This shift supports the development of “practical intelligence,” which enables more effective decision-making in complex social situations. Additionally, older adults often exhibit the “positivity effect,” showing a tendency to prioritize positive over negative information. This contributes to better emotional regulation and overall well-being (Johansson & Bjälkebring, 2015).
Social relationships also undergo significant changes with longer lifespans. According to Socioemotional Selectivity Theory, as individuals become more aware of the limited nature of time, they begin to prioritize fewer but more meaningful relationships (Carstensen, 2006; Johansson & Bjälkebring, 2015; Mitina et al., 2020). Strong social connections have been shown to increase the likelihood of survival by 50%, an effect comparable to quitting smoking (Johansson & Bjälkebring, 2015). However, longer lifespans can also introduce relational challenges. Extended marriages may lead some individuals to choose divorce later in life, and changes in modern family structures mean that many older adults live separately from their children (Freund et al., 2009; MacGregor, 2003).
One of the most complex aspects of longevity is the weakening of the structured framework of life. In earlier stages, life is guided by clear milestones such as education, career, and family. However, retirement can now span decades, creating a prolonged period of uncertainty (Freund et al., 2009). This requires individuals to develop stronger self-regulation skills in order to create meaning in their own lives. The Selection, Optimization, and Compensation (SOC) model provides an important framework in this regard: individuals must select meaningful goals, develop the skills necessary to achieve them, and compensate for losses by finding alternative strategies (Fernández-Ballesteros & Sánchez-Izquierdo, 2019; Freund et al., 2009).
As lifespans potentially extend beyond 120 years, the question of how individuals will make sense of such long lives becomes increasingly important. Some adopt a “medicalist” perspective, questioning the value of life when health declines, while others embrace a more “stoic” approach, finding meaning and dignity despite challenges (Lang & Rupprecht, 2019). Research suggests that the foundation of a long and fulfilling life lies not in material wealth, but in meaningful activities and the experience of “flow.” When individuals move away from material identities and toward psychological and emotional growth, they are more likely to achieve a stronger sense of well-being (MacGregor, 2003).
In conclusion, living longer is a biological achievement, but making those years meaningful, productive, and fulfilling is a psychological skill. An extended lifespan offers humanity not only more time, but also a greater responsibility in deciding how that time will be lived.
References
Fernández-Ballesteros, R., & Sánchez-Izquierdo, M. (2019). Are psycho-behavioral factors accounting for longevity? Frontiers in Psychology, 10, 2516. https://doi.org/10.3389/fpsyg.2019.02516
Freund, A. M., Nikitin, J., & Ritter, J. O. (2009). Psychological consequences of longevity: The increasing importance of self-regulation in old age. Human Development, 52(1), 1–37. https://doi.org/10.1159/000189213
Johansson, B., & Bjälkebring, P. (2015). Psychology of longevity. In Encyclopedia of Geropsychology. Springer. https://doi.org/10.1007/978-981-287-080-3_126-1
Lang, F. R., & Rupprecht, F. S. (2019). Motivation for longevity across the life span: An emerging issue. Innovation in Aging, 3(2), 1–11. https://doi.org/10.1093/geroni/igz014
MacGregor, D. G. (2003). Psychology, meaning and the challenges of longevity. Futures, 35(6), 575–588. https://doi.org/10.1016/S0016-3287(02)00107-6
Mitina, M., Young, S., & Zhavoronkov, A. (2020). Psychological aging, depression, and well-being. Aging, 12(18), 18765–18777. https://doi.org/10.18632/aging.103880