Evidence map›Paper›PMID 33748832›Full record

ArticleThe American journal of clinical nutrition2021

Meat consumption and risk of incident dementia: cohort study of 493,888 UK Biobank participants.

Huifeng Zhang, Darren C Greenwood, Harvey A Risch, David Bunce, Laura J Hardie, Janet E Cade

Open access · hybridAbstract read
In one paragraph

Article in The American journal of clinical nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 5 pooled it
18.0field-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

67 citing papers in PubMed, 5 syntheses or guidelines pooled it, 125 citations in OpenAlex.

  1. Sustainable dietary recommendations for the Spanish population.European journal of clinical nutrition · 2026
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  15. Individual and neighborhood socioeconomic inequality and the risk of dementia: A 14-year follow-up study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  16. Source-specific nitrate intake and incident dementia in the Danish Diet, Cancer and Health Study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
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7 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Huifeng ZhangNutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK.ORCID 0000-0002-9818-7904
Darren C GreenwoodLeeds Institute for Data Analytics, Faculty of Medicine and Health, University of Leeds, Leeds, UK.
Harvey A RischDepartment of Chronic Disease Epidemiology, Yale School of Public Health, New Haven CT, USA.
David BunceSchool of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, UK.
Laura J HardieDivision of Clinical and Population Sciences, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK.
Janet E CadeNutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK.
University of Leeds · GBYale University · US

Funding

Medical Research Council MC_PC_17228Medical Research Council MC_QA137853
6 · The paper itself

Abstract

backgroundWorldwide, the prevalence of dementia is increasing and diet as a modifiable factor could play a role. Meat consumption has been cross-sectionally associated with dementia risk, but specific amounts and types related to risk of incident dementia remain poorly understood.

objectiveWe aimed to investigate associations between meat consumption and risk of incident dementia in the UK Biobank cohort.

methodsMeat consumption was estimated using a short dietary questionnaire at recruitment and repeated 24-h dietary assessments. Incident all-cause dementia comprising Alzheimer disease (AD) and vascular dementia (VD) was identified by electronic linkages to hospital and mortality records. HRs for each meat type in relation to each dementia outcome were estimated in Cox proportional hazard models. Interactions between meat consumption and the apolipoprotein E (APOE) ε4 allele were additionally explored.

resultsAmong 493,888 participants included, 2896 incident cases of all-cause dementia, 1006 cases of AD, and 490 cases of VD were identified, with mean ± SD follow-up of 8 ± 1.1 y. Each additional 25 g/day intake of processed meat was associated with increased risks of incident all-cause dementia (HR: 1.44; 95% CI: 1.24, 1.67; P-trend < 0.001) and AD (HR: 1.52; 95% CI: 1.18, 1.96; P-trend = 0.001). In contrast, a 50-g/d increment in unprocessed red meat intake was associated with reduced risks of all-cause dementia (HR: 0.81; 95% CI: 0.69, 0.95; P-trend = 0.011) and AD (HR: 0.70; 95% CI: 0.53, 0.92; P-trend = 0.009). The linear trend was not significant for unprocessed poultry and total meat. Regarding incident VD, there were no statistically significant linear trends identified, although for processed meat, higher consumption categories were associated with increased risks. The APOE ε4 allele increased dementia risk by 3 to 6 times but did not modify the associations with diet significantly.

conclusionThese findings highlight processed-meat consumption as a potential risk factor for incident dementia, independent of the APOE ε4 allele.

Indexed as

DementiaMeatAnimalsApolipoproteins EBiological Specimen BanksCattleFemaleGene Expression RegulationHumansMalePoultrySheepSwineUnited KingdomApoE protein, humanApolipoproteins EAlzheimer diseasedementiameat consumptionprocessed meatUK Biobankvascular dementia

Identifiers

PMID33748832
PMCPMC8246598
OpenAlexW3138821571

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.