The passing of Maria Branyas Morera at 117 years old in August 2024 marked the end of an era for longevity records, but it also gave science a priceless gift. A comprehensive study from the University of Barcelona has since dissected her DNA and gut health, revealing that her biological age was roughly 17 years younger than her actual years. The key? A rare genetic edge paired with a remarkably disciplined lifestyle that leaned heavily on a humble, everyday staple: natural yogurt.
The Science of a Supercentenarian
Born in San Francisco in 1907, Maria lived through the Spanish flu, both World Wars, and the COVID-19 pandemic before settling in Catalonia. Led by geneticist Professor Manel Esteller, the research team conducted what is considered the most thorough analysis ever performed on a supercentenarian. The findings were staggering. Her microbiome was dominated by Bifidobacteria, a class of probiotics that promotes a powerful anti-inflammatory state within the body.
“Her cognitive function was completely clear, and she had no cardiovascular disease,” Esteller told researchers. “The only issues were mobility and hearing. This is incredibly rare at her age.”
The study found that her gut flora bore a striking resemblance to that of a healthy, breastfed infant. This pristine microbial environment directly suppressed the chronic, low-grade inflammation that fuels most age-related diseases—from heart conditions to cognitive decline.
A Daily Dose of Dairy
While her genetics provided a head start, her daily habits did the heavy lifting. The cornerstone of her longevity plan was strict: she ate three cups of natural yogurt every single day for decades.
- Probiotic Powerhouse: This constant stream of live cultures continuously seeded her intestines with beneficial bacteria, reinforcing her infant-like gut profile.
- Mediterranean Foundation: The yogurt was part of a broader Mediterranean diet rich in fresh vegetables, olive oil, and whole grains. She completely abstained from alcohol and tobacco.
- Beyond the Plate: Maria walked daily in nature and actively cultivated strong, positive social bonds while avoiding toxic relationships, a factor often linked to lower stress and better gut health.
The Takeaway for Longevity Seekers
The research sends a clear, actionable message for anyone hoping to age well. While we cannot choose our genes, we can absolutely influence how they express themselves through our lifestyle. The legacy of Maria Branyas Morera strongly suggests that optimizing gut health is one of the most powerful levers we have for extending healthspan.
For those looking to follow her blueprint:
- Incorporate fermented foods: Yogurt, kefir, kimchi, and sauerkraut help seed the gut with anti-inflammatory bacteria.
- Adopt a plant-forward, Mediterranean-style diet: Focus on fiber, healthy fats, and minimal processed foods.
- Move gently but consistently: Daily walking in green spaces supports both physical and microbial health.
- Prioritize social connection: Strong relationships are a proven buffer against the biological stress that accelerates aging.
The death of the world’s oldest person didn’t close the book on her secrets. Instead, it opened a new chapter in our understanding of how small, daily dietary rituals can fundamentally reshape our biological future. Her story is a powerful prompt to re-evaluate what we put on our plates—not just for the years we add to our life, but for the life we add to our years.