In the long human search for the secret to a long life, María Branyas — who died on August 19, 2024, at 117 years old — offered researchers in Barcelona something rare: a living archive of exceptional longevity. What they found was not a single key but a constellation of factors — protective genes, a thriving gut, a quiet mind, and decades of modest, sustained choices. Her story reminds us that the boundary between biology and the way we choose to live our days may be thinner than we imagine.
World's Oldest Person's 117-Year Life Reveals Longevity's Genetic and Lifestyle Secrets
María Branyas passed away at age 117 on August 19, 2024.
Her biological age was 23 years younger than her actual age
Mark
So what we're really looking at here is that Branyas lived to 117, and scientists got to study her biology before she died. What did they actually find that was different about her?
Mimi
They found six things working together. She had protective genes—variants that guard the brain and heart. Her gut bacteria were unusually healthy, rich in a specific type called Bifidobacterium. Her cholesterol was excellent. She had low inflammation. And her biological age, measured by epigenetic markers, was about 23 years younger than her actual age.
Luke
But here's the thing—we're talking about one person. One case study. The researchers themselves said you can't generalize from this. So when we say "her gut bacteria were rich in Bifidobacterium," we know that. But we don't know if that's why she lived to 117, or if it's just something that happened to be true about her.
Mimi
That's fair. But they did trace the Bifidobacterium partly to her diet—she ate yogurt regularly. And she never smoked, never drank alcohol. Those are things we can actually point to.
Mark
Did she say anything about how she thought she lived so long?
Mimi
She did. She said order, tranquility, strong family connections, time in nature, emotional stability, avoiding worry, and positivity were central to her well-being. She also said luck and good genetics played a role.
Luke
So she attributed it to lifestyle and luck. The scientists found genetic and biological markers that support that. But the researchers were explicit: aging is highly individual. What worked for her might not work for someone else, even if they have similar genes.
Mark
So what's the actual takeaway for medicine or health?
Mimi
The researchers think diet and microbiome health could be important levers for longevity. They also think identifying longevity-associated genes could lead to new therapeutic approaches. But they said more research is needed.
Luke
Right. This is a starting point, not an answer. One person's biology, no matter how remarkable, can't tell us how to make everyone live longer.
Le Pouls
- At 117, María Branyas was not merely old — her cells were biologically some 23 years younger than her birth certificate suggested, a gap that demanded scientific explanation.
- Researchers found her genome was quietly armored: protective variants shielded her brain and heart, while predispositions for cancer and Alzheimer's were simply absent.
- Her gut microbiome — rich in Bifidobacterium, linked in part to a lifelong habit of eating yogurt — pointed to the digestive system as an underestimated engine of longevity.
- The tension in the findings is real: a single extraordinary life cannot be turned into a universal prescription, and scientists are careful to say so.
- Still, the research opens a door — toward therapeutic approaches targeting diet, microbiome health, and longevity-associated genes — even as it insists that aging remains stubbornly individual.
In the long human search for the secret to a long life, María Branyas — who died on August 19, 2024, at 117 years old — offered researchers in Barcelona something rare: a living archive of exceptional longevity. What they found was not a single key but a constellation of factors — protective genes, a thriving gut, a quiet mind, and decades of modest, sustained choices. Her story reminds us that the boundary between biology and the way we choose to live our days may be thinner than we imagine.
María Branyas died on August 19, 2024, at 117 years old, the oldest living person on Earth. Before her death, researchers at the Josep Carreras Institute in Barcelona had begun analyzing her biology — her genome, gut microbiome, metabolism, and more — searching for what had allowed her to outlast nearly everyone who had ever lived.
What they found was not one secret but a convergence. Her genome carried protective variants linked to brain and heart health, and notably lacked the predispositions that typically raise risk for cancer, Alzheimer's, and metabolic disease. Her inflammation was low. Her immune system remained capable. And her gut microbiome was rich in Bifidobacterium — a bacterium associated with health and longevity — a quality researchers traced in part to her regular consumption of yogurt.
Her cholesterol profile was equally striking: low total cholesterol, low LDL, high HDL. She had never smoked, never drank alcohol. These were not dramatic interventions but quiet, sustained choices accumulated over more than a century.
Branyas herself had long pointed to order, tranquility, family, nature, and the deliberate avoidance of worry as the pillars of her long life. The science, in many ways, agreed. Epigenetic markers placed her biological age roughly 23 years behind her chronological one — her cells aging at a pace her birth year could not predict.
Dr. Manel Esteller and his team were careful not to overreach. A single life, however extraordinary, cannot be generalized into a formula. Aging is shaped by genetics and environment in ways that remain deeply individual. But the study suggests that diet, microbiome health, and longevity-associated genes may one day point toward new therapeutic approaches — and that the distance between how we live and how long we live may be smaller than we tend to assume.
María Branyas died on August 19, 2024, at 117 years old, holding the title of world's oldest living person. Before her death, researchers at the Josep Carreras Institute in Barcelona had begun studying her biological samples—her genome, epigenome, transcriptome, proteome, and metabolism—to understand what had allowed her to live so long. What they found was not a single secret but a convergence: protective genes, a particular kind of gut bacteria, a lifestyle free of smoking and alcohol, and a mind that seemed to know how to stay calm.
Branyas herself had always been clear about what she believed kept her alive. Order mattered to her. Tranquility mattered. She valued strong family connections, time spent in nature, emotional stability, and the deliberate practice of avoiding worry. She acknowledged luck and good genetics, but she spoke as though the way you lived your days was as important as the genes you inherited. The researchers who studied her after her death found evidence to support both claims.
Dr. Manel Esteller's team discovered that Branyas carried genetic variants associated with protection of the brain and heart—the same kinds of protective patterns researchers have observed in other long-lived species like dogs, worms, and flies. Her genome lacked the predispositions that typically increase risk for cancer, Alzheimer's disease, and metabolic disorders. Her inflammation levels were low. Her immune system remained competent. But perhaps most striking was the composition of her gut microbiome, which was rich in Bifidobacterium, a bacterium linked to health and longevity. The researchers traced this partly to her regular consumption of yogurt—a simple dietary habit that appeared to have cascading biological effects.
Her cholesterol profile was remarkable: low total cholesterol, low LDL, and high HDL. This combination, the researchers noted, likely reflected both her diet and her body's efficient metabolism. She had never smoked. She had never drunk alcohol. These were not dramatic interventions but sustained choices, the kind that accumulate over decades into something that looks like luck from the outside.
The study identified six key factors working together in her biology: a protective genome, efficient metabolism, low inflammation, a competent immune system, a youthful microbiome, and a biological age that was approximately 23 years younger than her chronological age, as measured by epigenetic markers. She was 117 years old, but her cells appeared to be aging at a different pace.
Dr. Esteller emphasized that the research suggests diet and microbiome health may be powerful levers for promoting longevity, and that identifying genes associated with long life could eventually lead to new therapeutic approaches. But the researchers were careful not to overstate what a single case could teach. Aging is highly individual, shaped by both genetics and the environment in which a person lives. What worked for Branyas—her particular combination of genes, her yogurt, her calm, her family, her time in nature—cannot simply be prescribed to others. The study concluded that further research is needed to understand the full mechanisms of healthy aging, including the roles of exercise, metabolism, and potential drugs that might target longevity-related traits.
Citations marquantes
Order, tranquility, strong family connections, time in nature, emotional stability, avoiding worries, and positivity were central to her well-being.— María Branyas, on the factors she believed contributed to her long life
Aging is highly individual, shaped by both genetics and environment, and findings from a single case cannot be generalized.— Josep Carreras Institute researchers, cautioning against overgeneralizing Branyas' case
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