In August 2024, the world said goodbye to Maria Branyas Morera, who, at 117 years old, was one of the globe’s most venerable humans. Born in San Francisco in 1907, she survived two world wars, the 1918 flu pandemic, and COVID-19 before passing away in Catalonia, Spain. Now, a groundbreaking study conducted posthumously by a team from the University of Barcelona has peeled back the biological layers of her extraordinary lifespan. Led by genetics professor Manel Esteller, the research analyzed Morera’s DNA and gut microbiome, uncovering a startling truth: her cells were biologically 17 years younger than her chronological age, and her intestinal flora mirrored that of a newborn baby.
The Science Behind Super-Aging: Cellular Youth and Gut Harmony
Esteller’s team, which conducted what is considered the most comprehensive study ever on a supercentenarian (someone over 110), found that Morera’s genetic makeup gave her a significant head start. Her cells showed a biological age roughly 17 years younger than her actual years, suggesting that her body’s tissues remained remarkably resilient. Even more striking was her gut microbiome, which exhibited a powerful “anti-inflammatory profile.” High levels of beneficial bacteria, particularly Bifidobacteria, dominated her digestive system, effectively curbing chronic inflammation—a known driver of aging and disease.
“Her mind was completely clear. She could recall memories from when she was four years old—impressive. She had no cardiovascular disease, which is common in the elderly. Her only problems were mobility and hearing. It’s incredible,” Esteller remarked. This resilient gut environment, he noted, is a hallmark of infant microbiomes, indicating that Morera’s internal ecosystem was extraordinarily healthy.
Diet as Destiny: The Three-Cup Yogurt Rule
While genetics played a role, Morera’s lifestyle choices were equally pivotal. For decades, she adhered to a strict Mediterranean diet, but one specific habit stood out: she ate three cups of natural yogurt every day. This wasn’t just a random preference—it was a deliberate, lifelong strategy to nourish her gut microbes. Yogurt is a rich source of live probiotics, including the very Bifidobacteria found abundantly in her system.
Morera’s daily regimen also included plenty of fresh fruits and vegetables, olive oil, whole grains, and moderate fish consumption—all cornerstones of the Mediterranean diet, which is widely celebrated for its anti-aging and heart-protective benefits. She avoided alcohol and tobacco entirely, kept up with regular walks in nature, and maintained strong, positive social bonds with family and friends. Dr. Esteller emphasized that avoiding toxic relationships and chronic stress likely contributed to her mental and physical longevity.
A Blueprint for Longevity: Actionable Takeaways
The study offers more than just a fascinating story; it provides practical insights for anyone seeking to extend their healthspan. The findings suggest that what we eat directly shapes our gut microbiome, which in turn influences our immune system, inflammation levels, and overall aging process. Here are key takeaways from Morera’s life:
- Prioritize fermented foods: Daily consumption of natural yogurt, kefir, or other probiotic-rich foods can help maintain a youthful gut environment.
- Adopt a Mediterranean eating pattern: Focus on vegetables, fruits, whole grains, healthy fats, and lean proteins while minimizing processed foods and saturated fats.
- Avoid known risk factors: Staying away from smoking and excessive alcohol reduces cellular damage.
- Stay active and connected: Regular, moderate exercise and nurturing relationships with supportive people can buffer against stress and illness.
The Broader Implications for Aging Science
This research reinforces a growing consensus in gerontology: longevity is not a single gene or a miracle pill. It is a complex interplay of genetics, diet, and lifestyle that begins early and compounds over time. However, Morera’s case is unique because it offers a rare glimpse into the biology of someone who successfully navigated more than a century of life. As scientists continue to unpick the links between gut health and aging, the next step will be to develop dietary interventions or probiotic therapies that can help others mimic some of these benefits. For now, the lesson from the world’s oldest woman is simple: start with what’s on your plate.