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Anxiety as a Predictor for Cognitive Decline and Dementia: A Systematic Review and Meta-Analysis
Abstract
Background Because anxiety is postulated as a risk factor for dementia, we performed a systematic review and meta-analysis to investigate whether anxiety predicts cognitive decline and/or dementia, taking the stage of cognitive decline as well as setting into account.Methods A systematic literature search up to January 2015 was performed to identify all longitudinal studies on the association between anxiety and cognition. Data extraction and methodological quality assessment were conducted independently by two authors. Where possible, pooled relative risks were calculated to examine anxiety as a possible risk factor for cognitive decline cognitive impairment and dementia in community studies (objective 1), as well as for conversion to dementia patients referred to memory clinics (objective 2).Results Twenty studies met inclusion criteria. Data on cognitive decline were too heterogeneous for meta-analysis. Anxiety predicted incident cognitive impairment (4 studies, relative risk [RR]: 1.77, 95% confidence interval [CI]: 1.38-2.26, z = 4.50, p < 0.001) and dementia (6 studies, RR: 1.57, 95% CI: 1.02-2.42, z = 2.05, p = 0.040) in the community, the latter driven by studies with a mean age of 80 years or above. Among clinical mild cognitive impairment samples, anxiety did not predict conversion to dementia (RR: 1.21, 95% CI: 0.90-1.63, z = 1.28, p = 0.200).Conclusions Anxiety is associated with an increased risk for cognitive impairment and dementia in the community. Stronger associations were driven by higher age, suggesting that it is a prodromal symptom. Causal biological pathways have also been described, which could explain the risk for incident cognitive impairment in the community. Future studies should include mediating mechanism when studying anxiety as a predictor for cognitive decline and/or dementia.
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“Systematic reviews and meta-analyses are less conclusive, however, with some providing support for anxiety as a risk factor for dementia (Gulpers et al., 2016), while others provide mixed results (Cooper et al.”
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Metadata
- Authors
- Gulpers, B., Ramakers, I., Hamel, R., Köhler, S., Oude Voshaar, R., & Verhey, F.
- Affiliations
- Maastricht University Medical Centre (NL)
- Corresponding author
- Gulpers, Bernice
- Venue
- The American Journal of Geriatric Psychiatry
- Publisher
- Elsevier BV
- Published
- 2016-10
- Volume
- 24
- Issue
- 10
- Pages
- 823-842
- ISSN
- 1064-7481 (ISSN-L)
- OpenAlex
- W2460803101
- Cited by
- 409
- References
- 52
- Citations by year
- 2026: 32 · 2025: 34 · 2024: 48 · 2023: 43 · 2022: 49 · 2021: 48 · 2020: 96 · 2019: 20 · 2018: 23 · 2017: 15 · 2016: 1
- FWCI
- 2.81
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Geriatric Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- University of Groningen research database (University of Groningen / Centre for Information Technology) (publishedVersion)
- Research Publications (Maastricht University) (submittedVersion)
- Radboud Repository (Radboud University) (submittedVersion)
- University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Health Sciences › Medicine › Oncology › Cancer-related cognitive impairment studies
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Keywords
- anxiety, cognitive decline, dementia, cognitive impairment, dementia risk factors, mild cognitive impairment, conversion to dementia, prodromal symptoms, older adults, community-dwelling older adults
- MeSH terms
- Anxiety, Anxiety Disorders, Dementia, Humans, Risk Factors, Cognitive Dysfunction
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