BARCELONA, SPAIN — When Maria Branyas Morera passed away in August 2024 at the age of 117, she left behind more than just a record as one of the world’s longest-living humans. She left scientists a biological blueprint for longevity. Researchers at the University of Barcelona have now decoded the secrets hidden in her DNA and gut microbiome, revealing that her cells were biologically 17 years younger than her actual age, and her intestinal bacteria resembled that of a newborn baby. The key, they say, was a simple daily habit: three cups of yogurt.
A Life That Spanned Three Centuries
Born in San Francisco in 1907, Branyas lived through two world wars, the 1918 influenza pandemic, and the COVID-19 outbreak. She spent her early childhood across the United States before settling in Catalonia, Spain. Despite the upheavals of the 20th century, her body remained remarkably resilient. Dr. Manel Esteller, a genetics professor at the University of Barcelona who led the study, described her as “completely lucid” with clear memories dating back to age four and no signs of cardiovascular disease—a near-miracle for someone her age.
The Science of Youthful Aging
The study, considered the most comprehensive ever conducted on a supercentenarian over 110, examined Branyas’s genetic makeup and gut microbiome. The findings were startling:
Cellular Rejuvenation: Her DNA analysis showed that her biological age was approximately 17 years younger than her chronological age. This means her tissues and organs functioned at a level typical of someone in their late 90s, rather than a centenarian.
Infant-Like Gut: Her intestinal microbiome was dominated by Bifidobacteria, a type of probiotic bacteria commonly found in healthy infants. This bacterial profile is associated with an anti-inflammatory state, effectively suppressing chronic inflammation—a known driver of aging and disease.
“Her only limitations were mobility and hearing,” Dr. Esteller noted. “Otherwise, it was incredible.”
The Mediterranean Diet Connection
So what fueled this extraordinary biology? Branyas’s daily routine offers actionable lessons for anyone seeking to extend their health span.
The Yogurt Rule
Every day, without fail, Branyas consumed three cups of natural yogurt. This fermented food is rich in live probiotics, particularly Bifidobacteria, which directly supports the kind of gut health scientists observed in her system. Regular intake of such probiotics has been linked to reduced inflammation, improved digestion, and lower risks of heart disease, diabetes, and certain cancers.
A Plant-Forward Plate
Her diet mirrored the classic Mediterranean diet: abundant fruits, vegetables, whole grains, olive oil, and moderate fish intake. This pattern is low in saturated fats and high in antioxidants and anti-inflammatory compounds, which collectively slow cellular aging.
Lifelong Discipline
She never smoked and avoided alcohol entirely. Daily walks in nature kept her active, while strong social bonds shielded her from toxic relationships and chronic stress—factors now recognized as crucial for longevity.
What This Means for the Rest of Us
While genetics certainly played a role—her DNA gave her a head start—Branyas’s lifestyle choices amplified that advantage. The takeaway is clear: you don’t need expensive supplements or extreme diets. Simple, consistent habits centered on fermented foods, whole plants, and emotional well-being can substantially shift your biological clock.
For those inspired to follow her path, here are practical steps:
- Incorporate fermented foods daily: Yogurt, kefir, kimchi, or sauerkraut provide living probiotics.
- Eat the rainbow: Aim for at least five servings of fruits and vegetables each day.
- Move naturally: A 20-minute walk outdoors supports both physical and mental health.
- Cultivate community: Prioritize relationships that uplift you and minimize exposure to negativity.
As researchers continue to unravel the secrets of supercentenarians, Branyas’s story reminds us that longevity isn’t just about adding years to life—it’s about adding life to years. Her body may have aged slowly, but her wisdom about the power of a yogurt-rich diet is timeless.
For further reading, explore our articles on the 101-year-old doctor’s longevity tips and Harvard’s study on protein and aging, linked below.