Evidence map›Paper›PMID 25617346›Full record

ArticleInternational journal of epidemiology2015

The epigenetic clock is correlated with physical and cognitive fitness in the Lothian Birth Cohort 1936.

Riccardo E Marioni, Sonia Shah, Allan F McRae, Stuart J Ritchie, Graciela Muniz-Terrera, Sarah E Harris, Jude Gibson, Paul Redmond, Simon R Cox, Alison Pattie and 8 more

Abstract read
In one paragraph

Article in International journal of epidemiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 364 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
364citing papers in PubMed, 5 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

364 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  5. Systematic Review of Pulmonary Function and Cognition in Aging.The journals of gerontology. Series B, Psychological sciences and social sciences · 2020
    Pooled it
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  10. Article
  11. Extracellular vesicles and epigenetic aging clocks in tissue aging: an exosome-focused conceptual framework with a focus on skin.The journals of gerontology. Series A, Biological sciences and medical sciences · 2026
    Review
  12. Epigenetic aging in Alzheimer's disease: Relation to proteome.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
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  14. Article
  15. Review
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304 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors.

Riccardo E MarioniCentre for Cognitive Ageing and Cognitive Epidemiology, and Centre for Genomic and Experimental Medicine, University of Edinburgh, Edinburgh, UK, Queensland Brain Institute, and.
Sonia ShahQueensland Brain Institute, and Translational Research Institute, University of Queensland, Brisbane, QLD, Australia.
Allan F McRaeQueensland Brain Institute, and Translational Research Institute, University of Queensland, Brisbane, QLD, Australia.
Stuart J RitchieCentre for Cognitive Ageing and Cognitive Epidemiology, and Department of Psychology, University of Edinburgh, Edinburgh, UK.
Graciela Muniz-TerreraMRC Unit for Lifelong Health and Ageing, London, UK.
Sarah E HarrisCentre for Cognitive Ageing and Cognitive Epidemiology, and Centre for Genomic and Experimental Medicine, University of Edinburgh, Edinburgh, UK.
Jude GibsonWellcome Trust Clinical Research Facility, and.
Paul RedmondDepartment of Psychology, University of Edinburgh, Edinburgh, UK.
Simon R CoxCentre for Cognitive Ageing and Cognitive Epidemiology, and Department of Psychology, University of Edinburgh, Edinburgh, UK.
Alison PattieDepartment of Psychology, University of Edinburgh, Edinburgh, UK.
Janie CorleyDepartment of Psychology, University of Edinburgh, Edinburgh, UK.
Adele TaylorDepartment of Psychology, University of Edinburgh, Edinburgh, UK.
Lee MurphyWellcome Trust Clinical Research Facility, and.
John M StarrCentre for Cognitive Ageing and Cognitive Epidemiology, and Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK and.
Steve HorvathGonda Research Center, David Geffen School of Medicine, Los Angeles, CA, USA.
Peter M VisscherCentre for Cognitive Ageing and Cognitive Epidemiology, and Queensland Brain Institute, and Translational Research Institute, University of Queensland, Brisbane, QLD, Australia.
Naomi R WrayTranslational Research Institute, University of Queensland, Brisbane, QLD, Australia.
Ian J DearyCentre for Cognitive Ageing and Cognitive Epidemiology, and Department of Psychology, University of Edinburgh, Edinburgh, UK, i.deary@ed.ac.uk.

Funding

Study Coordination and Measurement CoreP01AG043362 · NIA · OREGON HEALTH & SCIENCE UNIVERSITY · PI HOFER, SCOTT M. · 2013 to 2017
$7.8M
Biotechnology and Biological Sciences Research Council BB/F019394/1Medical Research Council MR/K026992/1NIA NIH HHS 1P01AG043362NIA NIH HHS P01 AG043362Wellcome Trust
6 · The paper itself

Abstract

backgroundThe DNA methylation-based 'epigenetic clock' correlates strongly with chronological age, but it is currently unclear what drives individual differences. We examine cross-sectional and longitudinal associations between the epigenetic clock and four mortality-linked markers of physical and mental fitness: lung function, walking speed, grip strength and cognitive ability.

methodsDNA methylation-based age acceleration (residuals of the epigenetic clock estimate regressed on chronological age) were estimated in the Lothian Birth Cohort 1936 at ages 70 (n = 920), 73 (n = 299) and 76 (n = 273) years. General cognitive ability, walking speed, lung function and grip strength were measured concurrently. Cross-sectional correlations between age acceleration and the fitness variables were calculated. Longitudinal change in the epigenetic clock estimates and the fitness variables were assessed via linear mixed models and latent growth curves. Epigenetic age acceleration at age 70 was used as a predictor of longitudinal change in fitness. Epigenome-wide association studies (EWASs) were conducted on the four fitness measures.

resultsCross-sectional correlations were significant between greater age acceleration and poorer performance on the lung function, cognition and grip strength measures (r range: -0.07 to -0.05, P range: 9.7 x 10(-3) to 0.024). All of the fitness variables declined over time but age acceleration did not correlate with subsequent change over 6 years. There were no EWAS hits for the fitness traits.

conclusionsMarkers of physical and mental fitness are associated with the epigenetic clock (lower abilities associated with age acceleration). However, age acceleration does not associate with decline in these measures, at least over a relatively short follow-up.

Indexed as

CognitionDNA MethylationEpigenesis, GeneticPhysical FitnessAgedAgingBiomarkersCross-Sectional StudiesEpigenomicsFemaleHand StrengthHumansLinear ModelsLongitudinal StudiesMaleRespiratory Function TestsBiomarkerscognitive functionDNA methylationepigenetic clockfitnesslongitudinal

Identifiers

PMID25617346
PMCPMC4588858

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.