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A study published in Frontiers in Aging reports unusually high late-life survival among women in Bolotana, Sardinia, using municipal and church records to validate ages. Researchers estimate that 13.8% of women there who reach 70 live to 100, but the study does not establish why, or prove that the village meets every definition of a blue zone.
A study of Bolotana, a village in Sardinia, reports unusually high survival into very old age among women: researchers estimate that 13.8% of women who reach 70 live to 100. The findings, published in Frontiers in Aging, raise the possibility that Bolotana could be a newly identified longevity hotspot, but do not explain what accounts for its survival pattern.
The research team examined demographic records for the village, which has about 2,300 residents, and reconstructed life histories using civil records and church archives. The study documented 38 centenarians among 3,060 people born in Bolotana between 1900 and 1925. Researchers said they matched birth, death and baptismal records to check ages, a step that matters when assessing claims about extreme longevity.
Among women who had reached age 70, the estimated probability of reaching 100 was 13.8% in Bolotana, compared with about 3.5% in Italy and 3.6% in the United States. The study also estimated that Bolotana women who reach 70 have nearly 21 additional years of life expectancy. These are population estimates from the study, not predictions about any individual’s lifespan.
The village drew attention in 2024, when researchers estimated that six residents aged 100 or older were living there. The study authors put that prevalence at roughly 11 times the U.S. rate. They then undertook a longer historical analysis to evaluate whether the apparent concentration reflected unusually high survival rather than incorrect ages in records.
What Bolotana Adds to Longevity Research
Bolotana offers researchers a setting in which an unusually high rate of late-life survival can be examined alongside historical records capable of checking residents’ ages. That evidence is relevant because errors in age records can distort research on centenarians. In this case, the team says independent municipal and church sources allowed it to validate the ages it studied.
The results may also broaden research on Sardinia, which has long drawn attention for longevity in parts of the island. The original Sardinian blue zone is known for unusually high male longevity; Bolotana’s strongest pattern in this study was among women who reached age 70. The comparison could help researchers investigate how survival patterns differ across communities and between women and men.
For readers, the central point is a research lead, not a recipe for living longer. The study describes an association in one village and does not show that moving there, adopting a particular diet, or copying a single local habit would increase an individual’s lifespan. Identifying the influences behind the pattern would require further research.
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How Researchers Checked Ages
The term blue zone is used for places associated with unusually long lives. Earlier research identified communities including Okinawa in Japan and the Nicoya Peninsula in Costa Rica. Sardinia also has an established place in longevity research, though the island’s better-known pattern has involved high male longevity.
To assess Bolotana, the study considered two measures: life expectancy at age 70 and the probability of surviving from 70 to 100. Its historical analysis covered people born between 1900 and 1925. The authors used municipal records alongside baptismal and other church archives to cross-check birth and death information. This provides the study’s basis for treating the centenarian count as credible, while the survival estimates remain statistical assessments of a particular population.
The report describes Bolotana as a possible new blue zone rather than establishing that label as settled fact. The designation depends on how researchers define and verify unusual longevity, and the study’s findings concern this community and the records available to the team.
“What makes Bolotana extraordinary is that it has an incredible historical record that allows us to definitively evaluate ages at birth and death.”
— S. Jay Olshansky, study co-author and professor emeritus of epidemiology at the University of Illinois Chicago School of Public Health
What the Survival Pattern Cannot Explain
The study finds an unusual survival pattern but does not identify its cause. The report names local food production, olive oil, walking, family support, social connection and genetics as possible factors researchers could investigate. It does not establish the contribution of any one factor, or show that these characteristics caused residents to live longer.
The estimates also describe people in a specific village and historical population. The report does not establish whether the same pattern holds for all residents, for men to the same degree, or for people born in later generations. Nor does calling Bolotana a possible blue zone mean that the label has been universally accepted. The scope and interpretation of the findings remain tied to the study’s methods and comparisons.
Further Study of Local Conditions
The immediate next step is further research into the demographic and social conditions that may be linked to Bolotana’s late-life survival. Researchers would need to test possible influences rather than infer causation from the village’s characteristics alone. Comparisons with other populations could help clarify whether the pattern is distinctive and which factors are shared with other places known for longevity.
The published study, by Giovanni Mario Pes and co-authors, appears in Frontiers in Aging in 2026. The report does not name a specific follow-up study or provide a timetable for additional results. Until further evidence is available, Bolotana is best described as a community with unusually high estimated survival among older women and a historical record that researchers say supports age verification.
Key Questions
Where is Bolotana?
Bolotana is a village on the Italian island of Sardinia, in a mountainous area. The study describes a population of about 2,300 residents.
What did the study find about women’s survival?
Researchers estimated that 13.8% of Bolotana women who reach age 70 live to 100. They compared that with estimates of about 3.5% for women in Italy and 3.6% in the United States. These are population-level estimates, not individual forecasts.
Has Bolotana been confirmed as a blue zone?
The report says the findings suggest Bolotana could be a newly identified blue zone. The study documents unusual late-life survival, but the label is presented as a possibility rather than a settled conclusion.
Does the study explain why residents live so long?
No. The study identifies a survival pattern but does not establish its causes. Researchers cited walking, diet, family support, social connection and genetics as possible factors for further investigation.
Source: rss
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