A team of Italian researchers recently uncovered a connection between individuals exhibiting exceptional longevity (termed “super-agers”) and inherited DNA tracing back to Ice Age hunter-gatherer populations in Europe. The study’s findings were formally presented in the National Library of Medicine.
As part of an ancestry study, the investigation compared the DNA of numerous adults against a control cohort to ascertain how genetic heritage—specifically, the genetic makeup inherited from earlier populations—impacts the aging process. Subtle variations within this inherited DNA possess the potential to alter how the body manages both lifelong stress and infectious challenges.
The work was spearheaded by Professor Cristina Giuliani of the University of Bologna (UniBo) in Italy. Her research focus lies in epigenetics—chemical markers that influence gene activity across diverse populations—which aligns well with the objectives of longevity investigations.
Given Italy’s position at a nexus of ancient human migrations, its populace carries a complex, layered DNA signature from several past groups.
According to official figures, as of January 1st, 2025, the population included 23,548 people aged 100 and over, with females constituting nearly 83% of that group. This specific demographic juxtaposition enables researchers to test whether one of the ancient ancestral lines appears disproportionately often among those who attain extreme old age.
Longevity studies gain the most traction when researchers establish a clear endpoint, as vague age brackets tend to dilute the detectable genetic signals. The researchers specifically recruited individuals who had reached centenarian status (100 years or older) and contrasted their DNA profiles with those of younger people residing in comparable geographic areas.
While this stringent methodology helps mitigate the effects of normative aging, it cannot entirely eliminate variances stemming from childhood hardships, occupational demands, or environmental pollution exposure. New laboratory techniques now allow for the extraction of analyzable DNA from aged skeletal remains, providing scientists with the capability to juxtapose the genomes of past generations against contemporary ones.
The scientists leveraged paleogenomics—genome analysis utilizing DNA recovered from ancient materials—to map population history by comparing prehistoric genomes with modern ones. Because ancient samples remain infrequently discovered, any correlation established between an ancient lineage and longevity necessitates rigorous confirmation elsewhere.
Western Hunter-Gatherers (WHG), the European peoples of the Ice Age preceding the advent of agriculture, bequeathed a DNA legacy still detectable in many contemporary individuals. The documented evidence references a cluster of sites in Villabruna, Italy, dating back around 14,000 years, associated with this ancestry.
This designation describes a genetic pattern, not a specific tribe, and consequently, it cannot trace the precise familial history of any single person. Analyzing patterns across the genome permits scientists to estimate the proportion of an individual’s ancestry derived from various ancient sources.
For the purposes of this heredity investigation, the DNA of each participant was modeled as a composite mixture originating from four primary ancestral components: early farmers, steppe pastoralists, hunter-gatherers, and Iran-Caucasus groups.
These estimations inherently carry degrees of uncertainty; minor discrepancies might simply reflect location-specific traits or sampling biases. Therefore, the researchers employed multiple metrics to validate the reliability of their findings.
Across comprehensive analyses, a consistent result emerged: individuals demonstrating exceptional longevity showed a more pronounced inclination toward Western Hunter-Gatherer ancestry compared to the younger control cohort.
The ancestry study analyzed data from 333 long-lived persons and 690 control subjects, cross-referencing these against 103 reference genomes, leading to the identification of an association where this specific ancestry correlated with a 38% higher probability [of reaching extreme age].
“Within this research, we are highlighting the contribution of ancient genetic components to the longevity phenotype,” explains Giuliani.
Genome scanning facilitates the identification of clusters of inherited DNA segments, revealing whether certain specific DNA modifications correlate with advanced age.
Long-lived individuals possessed a greater abundance of DNA variants characteristic of WHG—subtle DNA alterations capable of modifying protein signaling—in several genomic regions already implicated in longevity pathways.
Such a pattern suggests the presence of specific biological mechanisms at play, though only in-vitro or laboratory experimentation can definitively illustrate how these variants affect processes like metabolism, immunity, or cellular regeneration.
Among centenarians, women typically outnumber men, and the ancestry analysis revealed this gender disparity most clearly within this age bracket. The limited sample size for men prevented the researchers from confirming whether the observed pattern holds true for males as well.
Further examination of datasets containing a larger cohort of long-lived males could confirm whether this signal reflects genuine biological distinctions, historical effects, or is merely a function of selection bias in the initial sample.
Harsh winters and scarcity of food once favored organisms adept at energy storage and rapid mobilization against infections. During the Last Glacial Maximum, the coldest extreme of the recent Ice Age, certain immunological and metabolic variants may have conferred a survival advantage.
These same genetic adaptations might today contribute to healthier aging, although contemporary diets and medical interventions drastically differ from conditions present during the Ice Age.
Aging frequently results in low-grade, chronic inflammation that causes tissue damage, subsequently escalating the risks for cardiovascular disease, diabetes, and cognitive decline. Scientists refer to this as inflammaging—a persistent activation of the immune response that intensifies with advancing years and can accelerate cellular wear and tear.
If the gene variants inherited from Western Hunter-Gatherers slow this inflammatory progression, they might contribute to improved late-life health, though any trade-offs involved necessitate direct investigation.
Human longevity is governed by a complex web of interconnected biological processes controlling cellular maintenance and stress responses, rather than being dictated by a single gene.
A recent review posits that only five major mechanisms have been consistently tied to longevity outcomes in humans. The ancestry signal might point toward one of these fundamental pathways, yet ancestry itself should not be taken as a definitive predictor.
Ancestry studies can prove misleading when confounding factors travel in tandem with genetics, particularly in nations exhibiting strong regional stratification.
Factors known to distort results include, for instance, localized dietary customs, income levels, or regional variations in healthcare quality. While the inheritance study accounted for genetic structuring, without deeper biological scrutiny, it cannot establish definitive causation.
Taken together, the ancestry research bridges deep European history with modern aging patterns by leveraging ancient genomes to pinpoint longevity-associated factors. Researchers can now proceed to test whether these inherited variants modulate immune balance or energy partitioning, while definitively separating lifestyle recommendations from the analysis of inherited predispositions.
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