Evidence map›Paper›PMID 33677592›Full record

Observational studyThe Journal of clinical endocrinology and metabolism2021

Association Between Midlife Obesity and Its Metabolic Consequences, Cerebrovascular Disease, and Cognitive Decline.

Filip Morys, Mahsa Dadar, Alain Dagher

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study in The Journal of clinical endocrinology and metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed, 2 pooled it
14.9field-weighted citation impact, top 1% of its field
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

109 citing papers in PubMed, 2 syntheses or guidelines pooled it, 145 citations in OpenAlex.

  1. ProbioticNarra J · 2025
    Pooled it
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  3. Effects of obesity on brain health and cognition.Nature reviews. Neurology · 2026
    Review
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49 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Filip MorysMontreal Neurological Institute, McGill University, Montréal, Quebec, Canada.ORCID 0000-0001-8996-2676
Mahsa DadarMontreal Neurological Institute, McGill University, Montréal, Quebec, Canada.ORCID 0000-0003-4008-2672
Alain DagherMontreal Neurological Institute, McGill University, Montréal, Quebec, Canada.ORCID 0000-0002-0945-5779
Montreal Neurological Institute and Hospital · CA

Funding

British Heart Foundation CH/1996001/9454CIHRMedical Research Council MC_PC_17228Medical Research Council MC_QA137853
6 · The paper itself

Abstract

contextChronic obesity is associated with several complications, including cognitive impairment and dementia. However, we have only piecemeal knowledge of the mechanisms linking obesity to central nervous system damage. Among candidate mechanisms are other elements of obesity-associated metabolic syndrome, such as hypertension, dyslipidemia, and diabetes, but also systemic inflammation. While there have been several neuroimaging studies linking adiposity to changes in brain morphometry, a comprehensive investigation of the relationship has so far not been done.

objectiveTo identify links between adiposity and cognitive dysfunction.

methodsThis observational cohort study (UK Biobank), with an 8-year follow-up, included more than 20 000 participants from the general community, with a mean age of 63 years. Only participants with data available on both baseline and follow-up timepoints were included. The main outcome measures were cognitive performance and mediator variables: hypertension, diabetes, systemic inflammation, dyslipidemia, gray matter measures, and cerebrovascular disease (volume of white matter hyperintensities on magnetic resonance imaging).

resultsUsing structural equation modeling, we found that body mass index, waist-to-hip ratio, and body fat percentage were positively related to higher plasma C-reactive protein, dyslipidemia, hypertension, and diabetes. In turn, hypertension and diabetes were related to cerebrovascular disease. Finally, cerebrovascular disease was associated with lower cortical thickness and volume and higher subcortical volumes, but also cognitive deficits (largest significant pcorrected = 0.02).

conclusionsWe show that adiposity is related to poor cognition, with metabolic consequences of obesity and cerebrovascular disease as potential mediators. The outcomes have clinical implications, supporting a role for the management of adiposity in the prevention of late-life dementia and cognitive decline.

Indexed as

AdiposityAdipose TissueAgedBody CompositionBody Mass IndexCerebrovascular DisordersCognitive DysfunctionFemaleHumansLatent Class AnalysisMagnetic Resonance ImagingMaleMiddle AgedObesityWaist-Hip Ratiocerebrovascular diseasecognitiongray matterobesitywhite matter hyperintensities

Identifiers

PMID33677592
PMCPMC8475210
OpenAlexW3135883603

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.