Metabolomic ageing clock validated across UK and Irish cohorts
In 2,295 participants aged 20–89 from two cohorts, a metabolomic clock predicted chronological age well; greater metabolomic age acceleration was associated with higher mortality, mild cognitive impairment and frailty risk. [1]
Automatic summary · not editorially reviewed
The key findings
The study used broad-spectrum LC-MS metabolomics of 3,686 plasma samples from 2,295 participants aged 20–89 in two cohorts. [1]
The metabolomic clock was highly predictive of chronological age in test samples (r = 0.92). [1]
Each standard deviation increase in metabolomic age acceleration was associated with 43% higher mortality risk in fully adjusted models. [1]
The source at a glance
- Study type / format
- Cross-cohort metabolomics study (abstract)
- Population / context
- 2,295 participants aged 20–89 from the UK Airwave study (N = 960) and the Irish Longitudinal Study of Ageing (N = 1,335).
- Summary based on
- Study abstract
- Original publication
- July 21, 2026
Plasma metabolomics in two ageing cohorts
The study examined how metabolism relates to ageing and age-related phenotypes. It used broad-spectrum liquid chromatography–mass spectrometry metabolomics on 3,686 plasma samples from 2,295 participants aged 20–89 in the UK Airwave study (N = 960) and the Irish Longitudinal Study of Ageing (N = 1,335). The authors describe this as a cross-cohort assessment of biological age.
Supporting source [1]
Metabolites linked to age, frailty and mortality
Several metabolites were associated with chronological age, frailty and mortality: the nucleoside N2,N2-dimethylguanosine, C-glycosyltryptophan, bile acid glucuronides and the antioxidant zeta-carotene. The noradrenergic metabolite 3-methoxy-4-hydroxyphenylglycol sulphate and the oligosaccharide sialyllactose were strongly associated with both age and mortality. The developed metabolomic clock was highly predictive of chronological age in test samples (r = 0.92), and metabolomic age acceleration correlated strongly between study visits (r > 0.6).
Supporting source [1]
Age acceleration and adjusted risk associations
In fully adjusted models, each standard deviation increase in metabolomic age acceleration (about 5 years) was associated with 43% higher mortality risk, 27% higher risk of mild cognitive impairment and 10% increased risk of a higher frailty score. These are associations, not evidence of causation. The authors state the metabolites may link ageing and age-related vulnerability and should be further investigated in mechanistic studies; the clock's translational use as a prognostic and response marker is described as potential.
Supporting source [1]
How to interpret this
This is an abstract; the full text was not reviewed. The design is described as a cross-cohort assessment, and the reported mortality, cognitive and frailty results are associations from adjusted models, not causal findings. The authors call for mechanistic studies and describe translational use only as potential.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Lau CE, Chekmeneva E, Pinto R, O'Halloran AM, Chu DKH, Dehghan A, Tzoulaki I, Elliott P, Kenny RA, McCrory C, Robinson O. · europepmc.org · July 21, 2026