117-Year-Old Breaks Biology

Maria Branyas Morera lived to 117 with a body that scientists say was aging fast and staying young at the same time.

Story Snapshot

Branyas died in 2024 as the world’s oldest verified person, and researchers studied her cells before her death.
A study in Cell Reports Medicine found her biological age measured 23 years younger than her actual age.
Scientists also found low inflammation, protective genes, and healthy gut bacteria unlike most people her age.
The research compared her samples to 75 other Iberian women to check how unusual her biology really was.

A Body Split Between Two Timelines

Researchers at the Josep Carreras Leukaemia Research Institute in Spain led a study on Branyas using blood, saliva, urine, and stool samples collected before she died. The team, coordinated by Dr. Manel Esteller and led by Eloy Santos, published their findings in the journal Cell Reports Medicine. They wanted to know how someone could reach 117 years old while still showing signs of youthful biology mixed in with heavy signs of age.

The results showed something researchers rarely get to document this closely. Branyas carried the wear and tear expected after more than a century of life. But her cells also showed features tied to youth and resilience, running side by side with signs of extreme aging. Scientists described this as proof that getting very old and staying healthy are not the same biological process.

What Her Cells Actually Revealed

The study used five different types of testing on Branyas’s samples, covering her genes, proteins, chemical markers, metabolism, and gut bacteria. That approach, known as multiomics, let researchers build a fuller picture than a single blood test ever could. The samples were collected in ways doctors describe as minimally invasive, respecting her age and comfort.

One striking number stood out. Her biological age, a measure of how worn down cells actually are, came in 23 years younger than her calendar age of 117. Researchers also found low levels of inflammation, a factor tied to disease and frailty in most elderly patients. Her gut bacteria looked more like that of a much younger, healthier person.

Comparing One Woman Against Dozens of Others

To make sure Branyas wasn’t just an outlier with no real meaning, researchers compared her results to 75 other Iberian women. That comparison group helped separate what was normal for her population from what made her biology stand apart. Her protective genetic features appeared distinct enough that researchers said they hadn’t seen the same pattern in other Europeans studied so far.

Diet and lifestyle came up often in coverage of the study, including her habit of eating yogurt daily and following a Mediterranean-style diet without smoking or drinking. Those details paint a picture of a disciplined lifestyle, but the study itself does not prove yogurt or any single habit caused her long life. Genetics, environment, and daily choices all appear tangled together in her case.

Why One Case Still Matters to Science

Studying a single person, no matter how remarkable, has real limits. Branyas represents a sample size of one, which means her results generate ideas for future research rather than settled conclusions. Broader research on centenarians and supercentenarians shows this is a common challenge, since so few people ever reach these extreme ages that large, controlled studies remain difficult to run.

That limitation doesn’t make her case less valuable. Rare individuals like Branyas give scientists a starting point to test theories about aging, inflammation, and genetic protection on a larger scale later. Her story adds real data to a field that usually works with theory and small samples, giving future researchers something concrete to build on.

A remarkably detailed study of Maria Branyas, who lived past 117, reveals that extreme longevity may involve both intense aging and powerful biological protection at the same time. Researchers found signs of advanced aging, but also low inflammation, benefhttps://t.co/nCQ96cGv54

— Michael W. Deem (@Michael_W_Deem) September 11, 2026

Branyas herself reportedly told researchers to study her and learn from her, understanding her body offered a rare window into aging most people never get to see. Her death didn’t end that contribution. It gave scientists a completed record to study in full, turning one long life into a lasting resource for understanding how the human body ages, and sometimes refuses to.