Supercentenarians—individuals aged 110 years or older—represent far more than statistical outliers in human longevity. These exceptional individuals actively resist the biological hallmarks of aging rather than merely surviving to extreme old age. A groundbreaking Brazilian study examining more than 100 centenarians, including 20 supercentenarians, provides unprecedented insights into the genetic, epigenetic, and environmental factors that promote exceptional longevity and could revolutionize interventions to extend health span across the general population.
Understanding Exceptional Biological Resilience
Researchers at the Human Genome and Stem Cell Research Center at the University of São Paulo, Brazil, published their findings in Genomic Psychiatry, highlighting why supercentenarians represent an invaluable resource for scientific discovery. The convergence of robust immune cell function, preserved protein maintenance systems, and systemic physiological integrity makes these individuals exceptional models for studying biological resilience in healthy aging.
“Rather than merely surviving to extreme old age, these individuals actively resist the hallmarks of aging, offering insights that could reshape our understanding of longevity and inform future interventions to extend health span,” the researchers explained. This resistance suggests protective mechanisms that operate throughout the lifespan, potentially guiding more effective preventive and therapeutic strategies for healthy aging in the broader population.
Defining Centenarian and Supercentenarian Populations
Centenarians are individuals who have reached at least 100 years of age, while supercentenarians represent the even rarer category of those aged 110 years or older. According to recent data from the Italian National Institute of Statistics, as of January 1, 2025, Italy was home to 23,548 centenarians—over 2,000 more than the previous year. Women comprised 83% of this population, demonstrating the well-documented female longevity advantage.
Semi-supercentenarians aged 105-109 years numbered 724 in Italy, with women representing 90.7% of this cohort. Only 19 supercentenarians were living in Italy, with just one male among them. Italy’s oldest living man, a resident of Basilicata, has surpassed 111 years of age, while the country’s oldest living woman, residing in Campania, is 115 years old.
Globally, João Marinho Neto of Brazil currently holds the distinction of being the world’s longest-lived man at 113 years, while Ethel Caterham of the United Kingdom is the oldest living woman at 116 years. The longest-lived person ever recorded remains Jeanne Calment from Arles, France, who died in 1997 at the remarkable age of 122 years.
Brazil’s Unique Genetic Diversity Advantage
The Brazilian population offers a uniquely powerful setting for longevity research due to possessing one of the highest levels of genetic diversity worldwide. This genetic heterogeneity results from the admixture of Indigenous peoples with early Portuguese colonizers, enslaved Africans, and later immigrants arriving throughout the 20th century, including Europeans—particularly Italians, Germans, and Portuguese—as well as Japanese populations.
This exceptional genetic diversity creates unparalleled opportunities to uncover protective mechanisms against aging that might be missed in more genetically homogeneous cohorts studied in other countries. The researchers argue that Brazil’s multicultural and multiethnic composition provides critical advantages for identifying universal longevity factors applicable across diverse global populations.
Comprehensive Study Design and Findings
The research team collected extensive clinical data and biological samples from more than 100 centenarians, including 20 supercentenarians, living across different regions of Brazil. Participants represented diverse social, cultural, and environmental backgrounds, enhancing the study’s applicability to varied populations worldwide.
Remarkably, at the time of contact with researchers, some Brazilian supercentenarians remained lucid and independent in basic daily activities such as feeding themselves—demonstrating not just extended lifespan but preserved functional capacity and quality of life.
Familial Longevity Patterns Reveal Genetic Insights
A major strength of this cohort is the inclusion of exceptional familial cases offering valuable insights into longevity heritability. One remarkable example features a 109-year-old woman whose nieces are aged 100, 104, and 106 years, representing one of Brazil’s longest-lived families ever documented.
“Investigating such rare familial clusters offers a rare window into the polygenic inheritance of resilience and may help disentangle the genetic and epigenetic contributions to extreme longevity,” the researchers noted. These family patterns suggest that longevity involves multiple genes working in concert rather than single genetic determinants.
Beyond Medical Intervention: Natural Resilience Factors
Because many study participants lacked consistent access to modern medicine throughout their lives, the cohort provides a rare scientific opportunity to investigate resilience and immune resistance factors that extend beyond medical intervention. This underrepresented population offers unique insights into innate biological protective mechanisms that function independently of advanced healthcare access.
Implications for Future Therapeutic Strategies
The presence of protective genetic, epigenetic, and environmental factors promoting resilience and adaptation throughout life could guide development of more effective preventive strategies for healthy aging. These discoveries may contribute to improved therapeutic approaches and precision medicine interventions that are globally relevant while remaining locally tailored to diverse populations.
“These factors may guide the development of more effective preventive and therapeutic strategies for healthy aging in the general population and improve specific health care for older adults,” the authors concluded, emphasizing the broad implications of supercentenarian research for public health and clinical medicine.
