Human study · Aging · 10 Nov 2026
In 50 captive zebra finches followed until natural death, a faster epigenetic pace tracked a shorter lifespan, and a one-time age gap did not
Source: GeroScience
What the research found
GeroScience published a longitudinal study online on 10 November 2026. Marianthi Tangili, Per J. Palsboll, and Simon Verhulst measured 100 whole-genome methylomes from 50 captive adult zebra finches, Taeniopygia castanotis, and followed the birds until natural death. Methylation fell across the genome with age, and it fell faster in birds with shorter lifespans. 29 CpG sites changed significantly with age. A clock built from 119 CpG sites estimated chronological age with a median absolute deviation of 0.68 years, 8.2 percent of the maximum lifespan in this set. Females raised in large broods, which have shorter lifespans, showed greater epigenetic age acceleration. That one-time acceleration did not predict lifespan or remaining lifespan. The within-bird rate of change did: faster epigenetic aging lined up with a shorter lifespan. A separate clock trained to predict post-sampling lifespan predicted remaining lifespan. These are birds, not people. DOI 10.1007/s11357-026-02646-5. Not medical advice.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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