Global life expectancy now averages 73.5 years, but living longer does not guarantee living well. A team from the University of Cagliari has turned its attention to one of the world's few blue zones—the mountainous Ogliastra region in east-central Sardinia—to understand what keeps its oldest residents not just alive, but mentally sharp and emotionally fulfilled.
What Makes a Blue Zone?
Blue zones are geographically isolated areas where people consistently reach extreme old age. Besides Sardinia's Ogliastra, the list includes Okinawa in Japan, Ikaria in Greece, and Nicoya in Costa Rica. To qualify, a region must have a verified concentration of nonagenarians and centenarians over at least 150 years, with reliable birth and death records. Previous research has pointed to genetics, diet, environment, and lifestyle, but the new study, published in the International Journal of Applied Positive Psychology, digs deeper into psychological and social factors.
The researchers compared older adults living in the Sardinian blue zone with those in a nearby rural area. Participants answered questions about their lifestyle, demographics, perceived quality of life, and completed a cognitive test. The results highlight three key ingredients: curiosity, emotional resilience, and an active social life.
Curiosity and Purpose as Pillars of Aging
Blue zone residents showed higher levels of curiosity and openness to new ideas, along with a stronger ability to understand and share emotions. They spent an average of 11.3 hours per week on cognitively and physically stimulating leisure activities—nearly double the 6.8 hours logged by their non-blue zone counterparts. Instead of trying to do everything, these elders selectively focus on activities they find gratifying, such as gardening, walking, or attending social gatherings at community centres.
“Adaptive personality profiles and active lifestyles are essential for maintaining mental and physical health in late adulthood,” the authors note. The study also found that older residents maintain strong social ties within their communities and report greater satisfaction with both family and non-family relationships. They employ more effective coping strategies for daily problems and demonstrate higher emotional competence.
This combination of social engagement and stress management is critical for aging well in these unique communities. The findings align with broader European research on the importance of purpose and connection in later life, as seen in initiatives like Schleswig-Holstein's 'Educational Sovereignty' model, which puts curiosity at the heart of learning.
Ogliastra: A Demographic Anomaly
The Sardinian blue zone spans six villages in Ogliastra. Here, the percentage of centenarians among people born between 1880 and 1900 was roughly five times higher than in the rest of Europe and three times higher than in Sardinia as a whole. That proportion has only increased since the term was coined nearly 20 years ago. Remarkably, while globally more women than men reach 100, in this part of Sardinia the ratio is roughly equal. The researchers verified ages by cross-checking civil and ecclesiastical archives and reconstructing family genealogies to rule out errors.
Sardinia's appeal extends beyond longevity. The island has seen a surge in tourism, as noted in Italy's leading role in European tourism, though some areas have introduced controversial beach access rules to manage crowds. The blue zone's lessons, however, are not about tourism but about a way of life that prioritises community, purpose, and continuous engagement.
As Europe's population ages, policymakers and health professionals are looking for models that promote quality of life, not just lifespan. The Sardinian example offers a compelling case for investing in social infrastructure and lifelong learning. The authors conclude that social engagement and effective stress management are critical components for aging well—a message that resonates far beyond the island's rugged interior.
