Studies of Brazilians living past 110 suggest resilience may shape the future of global aging science.
At first glance, it sounds like a screenplay. A 110-year-old grandmother. Her nieces and nephews are aged 100, 104 and 106. And the oldest of them, a 106-year-old nephew, is healthy enough to win a swimming competition at age 100 [ 1 ]. This is not fiction. It is one of several real families now being followed by Brazilian researchers trying to understand how some humans live well beyond 110 years.
These families of supercentenarians sit at the heart of a new Viewpoint published on January 6 in Genomic Psychiatry by Professor Mayana Zatz and her team at the Human Genome and Stem Cell Research Center at the University of São Paulo.
With this new study, Brazil may be the most valuable and most overlooked living laboratory for extreme human longevity.
Longevity research has long focused on populations in wealthier, more genetically uniform countries. Brazil breaks that mold. Its population reflects centuries of Indigenous ancestry, Portuguese colonization, the forced migration of millions of enslaved Africans and later waves of European and Japanese immigration. The result is extraordinary genetic diversity.
When researchers analyzed the genomes of older Brazilians, they identified more than 8 million genetic variants not present in existing global databases. Some of these variants appear potentially protective, quiet biological advantages that only emerge over a very long life.
According to the study’s first author, Mateus Vidigal de Castro, the lack of diversity limits longevity research because genetically diverse supercentenarians may carry unique protective traits that do not appear in uniform populations. In other words, science may have been looking in the wrong places for too long.
The numbers are striking. Three of the world’s longest-lived validated men are Brazilian, including the world’s oldest living man, born on October 5, 1912, and now 113 years old [ 2 ]. This is especially notable because extreme male longevity is rare. Men tend to face higher cardiovascular risk and different hormonal and immune challenges that make reaching 110 exceptionally difficult.
Among women, the pattern holds. Brazilian women appear more frequently in the world’s top 15 longest-lived women than those from far wealthier and more populous nations, including the United States. Longevity, the data suggest, is not simply a product of economic advantage or advanced healthcare.
Perhaps the most surprising finding is how ordinary these lives look. Unlike famous super-agers elsewhere who followed strict Mediterranean diets or carefully controlled routines, Brazilian supercentenarians report no special food restrictions. They ate what was available, and they lived normal lives.
Many also grew old in underserved regions, with little access to modern medicine. Their longevity cannot be explained by cutting-edge treatments or constant clinical monitoring. Instead, researchers point to something less glamorous but more powerful: biological resilience.
These individuals appear able to absorb stress, infection and cellular damage without tipping into decline.
At the cellular level, Brazilian supercentenarians show signs of systems that refuse to shut down. Autophagy, the process cells use to clear damaged proteins, remains remarkably efficient, similar to that seen in much younger people. The proteasome, often described as the cell’s waste-disposal unit, stays highly active.
Their immune systems also behave differently. Rather than simply weakening with age, they adapt. Certain immune cells – cytotoxic CD4+ T cells – assume roles typically performed by other cell types, creating a flexible defense system that prioritizes function over perfection.
The pandemic offered a real-world stress test. In 2020, three Brazilian supercentenarians contracted COVID-19 before vaccines were available… and survived. Later immune analyses showed that they produced potent neutralizing antibodies against the virus, along with molecular signals linked to innate immune defense.
How does someone over 110 survive a virus that killed millions of younger people worldwide? The researchers point to preserved immune coordination and protein maintenance, not a lack of exposure or special protection. These bodies do not escape aging; instead, they adapt to it.
Zatz argues that Brazil’s supercentenarians represent more than biological outliers. They challenge how longevity research is framed and who it is built for.
“Brazil’s long-lived elderly have the ability to resist signs of aging beyond just living a long life, which will be a key to increasing the healthy lifespan of the entire human race,” she says [ 1 ].
Her team is now expanding its work beyond genome sequencing, developing cellular models and deeper immune profiling. The broader call is aimed at international longevity and genomics consortia: include diverse, admixed populations or risk missing the very mechanisms that could extend healthy aging globally.
The lesson from Brazil is hopeful. Living longer may not require perfection. It may require resilience, quietly built over a lifetime.