Evidence map›Paper›PMID 35565667›Full record

ArticleNutrients2022

Plasma Caffeine Levels and Risk of Alzheimer's Disease and Parkinson's Disease: Mendelian Randomization Study.

Susanna C Larsson, Benjamin Woolf, Dipender Gill

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
11.0field-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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 58 citations in OpenAlex.

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  7. Coffee Consumption Is Associated With Later Age-at-Onset of Parkinson's Disease.Annals of clinical and translational neurology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 2 countries.

Susanna C LarssonUnit of Medical Epidemiology, Department of Surgical Sciences, Uppsala University, SE-751 85 Uppsala, Sweden.ORCID 0000-0003-0118-0341
Benjamin WoolfMRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK.ORCID 0000-0002-1505-2570
Dipender GillDepartment of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London W2 1NY, UK.ORCID 0000-0001-7312-7078
St George's, University of London · GBUniversity of London · GBUppsala University · SE

Funding

Medical Research Council MC_PC_17228Medical Research Council MC_QA137853Wellcome Trust
6 · The paper itself

Abstract

We leveraged genetic variants associated with caffeine metabolism in the two-sample Mendelian randomization framework to investigate the effect of plasma caffeine levels on the risk of Alzheimer's disease and Parkinson's disease. Genetic association estimates for the outcomes were obtained from the International Genomics of Alzheimer's Project, the International Parkinson's Disease Genomics consortium, the FinnGen consortium, and the UK Biobank. Genetically predicted higher plasma caffeine levels were associated with a non-significant lower risk of Alzheimer's disease (odds ratio 0.87; 95% confidence interval 0.76, 1.00;

Indexed as

Alzheimer DiseaseParkinson DiseaseCaffeineGenome-Wide Association StudyHumansMendelian Randomization AnalysisOdds RatioPolymorphism, Single NucleotideRisk FactorsCaffeineAlzheimer’s diseasecaffeinecoffeeMendelian randomizationParkinson’s disease

Identifiers

PMID35565667
PMCPMC9102212
OpenAlexW4224222193

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.