Early-life stress accelerated an epigenetic clock in zebra finch chicks
In zebra finch chicks, experimental early-life stress that reduces lifespan rapidly accelerated epigenetic age measured by a new blood DNA methylation clock; treated chicks shared methylation sites with older birds. [1]
Automatic summary · not editorially reviewed
The key findings
A new epigenetic clock was developed from blood DNA methylation profiles and applied to zebra finch chicks. [1]
Corticosterone-treated 29-day-old chicks shared differentially methylated loci with non-treated aged birds and clustered with 6-month-old birds. [1]
Elevated developmental corticosterone caused rapid epigenetic remodelling of metabolic pathways established in aging and longevity. [1]
The source at a glance
- Study type / format
- Animal experimental study (abstract)
- Population / context
- Zebra finch chicks (Taeniopygia guttata), including corticosterone-treated 29-day-old chicks and non-treated aged birds.
- Summary based on
- Study abstract
- Publication status
- Preprint · peer-review status not confirmed
- Original publication
- October 2, 2026
New methylation clock tested in zebra finch chicks
The study asked how molecular pathways link developmental stress to aging and shorter lifespan, a link the authors call poorly understood. They built a new epigenetic clock from blood DNA methylation profiles and applied it to zebra finch chicks (Taeniopygia guttata). The clock is described as highly accurate. This is an animal study in birds, not a human study.
Supporting source [1]
Corticosterone-treated chicks resembled older birds
Chicks treated with corticosterone at 29 days of age shared differentially methylated loci with non-treated aged birds and clustered with 6-month-old birds. The gene ZBTB16, a transcriptional repressor, was the gene most correlated with age and most strongly affected by corticosterone. Elevated developmental corticosterone caused rapid epigenetic remodelling of metabolic pathways already established in aging and longevity.
Supporting source [1]
Stress-survival rewiring proposed, not proven cause
The authors interpret their results as epigenetic rewiring of the aging trajectory through conserved 'stress-survival' mechanisms immediately after elevated early-life stress. These are associations in chicks, not proof that the same mechanisms cause human aging or that any intervention extends human lifespan. The abstract does not report sample sizes, follow-up or whether lifespan itself was measured.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Animal study in zebra finch chicks; sample sizes, follow-up and whether lifespan itself was measured are not reported. Associations do not establish causation in humans.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Olova NN, Zhou T, Boner W, Gillespie R, Ivimey-Cook ER, Marioni RE, Cunningham EJA, Chandra T, Little TJ, Monaghan P, Dominoni DM. · europepmc.org · October 2, 2026