ArticleThe journals of gerontology. Series B, Psychological sciences and social sciences2025
Loneliness and Biomarkers of Alzheimer's Disease, Axonal Damage, and Astrogliosis: A Coordinated Analysis of Two Longitudinal Cohorts.
Article in The journals of gerontology. Series B, Psychological sciences and social sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Meta-analyses of personality change from the preclinical to the clinical stages of dementia.Ageing research reviews · 2025Pooled it
- Loneliness and Plasma Biomarkers of Neurodegeneration in Community-Dwelling Older Adults: Cross-Sectional and Longitudinal Analyses.The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry · 2026Article
- Cross-sectional associations of loneliness with plasma p-tau217 and neurofilament light chain in dementia-free older adults in the INSPIRE-T baseline cohort.Journal of Alzheimer's disease : JAD · 2026Article
- Effects of hearing intervention on blood-based biomarkers of neuroinflammation and neurodegeneration: a secondary analysis of the ACHIEVE randomised controlled trial.EClinicalMedicine · 2026Article
- Associations of stable psychological traits with multi-omic subtypes of Alzheimer's dementia.Translational psychiatry · 2026Article
- Sociodemographic correlates of cognition and Alzheimer's disease and vascular biomarkers among middle to older age participants in the Healthy Brain Initiative.Journal of Alzheimer's disease : JAD · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
17 authors.
Funding
Abstract
objectivesLoneliness is associated with an elevated risk of dementia. There is mixed evidence from imaging studies on whether loneliness is associated with neuropathology in dementia-free adults. This study tests whether loneliness is associated with plasma neurobiomarkers of amyloid (Aβ42/Aβ40), phosphorylated tau 181 (pTau181), neurofilament light chain (NfL), and glial fibrillary acidic protein (GFAP) and imaging measures of amyloid and tau.
methodsParticipants were cognitively unimpaired older adults from the Baltimore Longitudinal Study on Aging (BLSA; N = 1,028 individuals and up to 2,277 neurobiomarker measurements; Baseline mean age = 66, SD = 15 years) and the UK Biobank (N = 1,263 individuals and up to 2,526 neurobiomarker measurements; Baseline mean age = 60, SD = 7 years). Single-item measures of loneliness and the Quanterix Single Molecule Array assays were used in both samples. In a subset of BLSA participants, positron emission tomography (PET) was used to assess cerebral amyloid burden (n = 220) and tau in the entorhinal cortex (n = 102).
resultsIn both samples and meta-analyses, loneliness was unrelated to plasma measures of Aβ42/Aβ40, pTau181, NfL, and GFAP. Changes in loneliness were also unrelated to changes in the plasma neurobiomarkers, and no consistent evidence of moderation by age, sex, or APOE ε4 allele was found. Loneliness was also unrelated to PET-based measures of amyloid and tau. DISCUSSION: This study found no associations between loneliness and measures of Alzheimer's disease pathology, axonal damage, or astrogliosis.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.