Evidence map›Paper›PMID 34684458›Full record

SynthesisNutrients2021

The Relation between Caffeine Consumption and Endometriosis: An Updated Systematic Review and Meta-Analysis.

Konstantinos S Kechagias, Konstantinos Katsikas Triantafyllidis, Margarita Kyriakidou, Panagiotis Giannos, Ilkka Kalliala, Areti Angeliki Veroniki, Maria Paraskevaidi, Maria Kyrgiou

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 19 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Diet and Endometriosis: An Umbrella Review.Foods (Basel, Switzerland) · 2025
    Review
  5. Endometriosis and Nutrition: Therapeutic Perspectives.Journal of clinical medicine · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. The Main Theories on the Pathogenesis of Endometriosis.International journal of molecular sciences · 2023
    Review
  13. Review
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

8 authors at 5 institutions in 4 countries.

Konstantinos S KechagiasDepartment of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London W12 0NN, UK.ORCID 0000-0001-6681-8479
Konstantinos Katsikas TriantafyllidisDepartment of Dietetics, West Suffolk Hospital NHS Foundation Trust, Bury St Edmunds, Bury Saint Edmunds IP33 2QZ, UK.ORCID 0000-0002-3858-4473
Margarita KyriakidouDepartment of Applied Mathematical and Physical Sciences, National Technical University of Athens, 15773 Athens, Greece.
Panagiotis GiannosSociety of Meta-Research and Biomedical Innovation, London W12 0BZ, UK.ORCID 0000-0003-1037-1983
Ilkka KallialaDepartment of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London W12 0NN, UK.
Areti Angeliki VeronikiDepartment of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London W12 0NN, UK.
Maria ParaskevaidiDepartment of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London W12 0NN, UK.
Maria KyrgiouDepartment of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London W12 0NN, UK.
Imperial College London · GBHelsinki University Hospital · FINational Technical University of Athens · GRSt. Michael's Hospital · CAWest Suffolk NHS Foundation Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While the contributing factors leading to endometriosis remain unclear, its clinical heterogeneity suggests a multifactorial causal background. Amongst others, caffeine has been studied extensively during the last decade as a putative contributing factor. In this systematic review and meta-analysis, we provide an overview/critical appraisal of studies that report on the association between caffeine consumption and the presence of endometriosis. In our search strategy, we screened PubMed and Scopus for human studies examining the above association. The main outcome was the relative risk of endometriosis in caffeine users versus women consuming little or no caffeine (<100 mg/day). Subgroup analyses were conducted for different levels of caffeine intake: high (>300 mg/day) or moderate (100-300 mg/day). Ten studies were included in the meta-analysis (five cohort and five case-control studies). No statistically significant association was observed between overall caffeine consumption and risk for endometriosis (RR 1.12, 95% confidence interval (CI) 0.97-1.28, I

Indexed as

Disease SusceptibilityAdultCaffeineCoffeeDrinkingEndometriosisFemaleHumansOdds RatioPublication BiasRisk AssessmentRisk FactorsCaffeineCoffeecaffeinecaffeine-containing beveragescoffeeendometriosisenvironmental factorsmeta-analysisreview

Identifiers

PMID34684458
PMCPMC8538723
OpenAlexW3204687324

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.