Evidence map›Paper›PMID 36339411›Full record

ArticleFrontiers in endocrinology2022

Hypothesis: Metformin is a potential reproductive toxicant.

Maja Tavlo, Niels E Skakkebæk, Elisabeth R Mathiesen, David M Kristensen, Kurt H Kjær, Anna-Maria Andersson, Rune Lindahl-Jacobsen

Open access · goldFull text read
In one paragraph

Article in Frontiers in endocrinology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
5.8field-weighted citation impact, top 4% 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

8 citing papers in PubMed, 20 citations in OpenAlex.

  1. Observational
  2. EndoCompass Project: Environmental Endocrinology.Hormone research in paediatrics · 2025
    Review
  3. Article
  4. Review
  5. Article
  6. Metformin use in pregnancy: What about long-term effects in offspring?Acta obstetricia et gynecologica Scandinavica · 2024
    Article
  7. Article
  8. 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

7 authors at 5 institutions in 2 countries.

Maja TavloFaculty of Health Sciences, Department of Epidemiology, Biostatistics, and Biodemography, University of Southern Denmark, Odense C, Denmark.
Niels E SkakkebækDepartment of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
Elisabeth R MathiesenCentre for Pregnant Women with Diabetes, Department of Endocrinology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
David M KristensenDepartment of Neurology, Danish Headache Center, Rigshospitalet - Glostrup, University of Copenhagen, Copenhagen, Denmark.
Kurt H KjærGlobe Institute, Section for GeoGenetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
Anna-Maria AnderssonDepartment of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
Rune Lindahl-JacobsenFaculty of Health Sciences, Department of Epidemiology, Biostatistics, and Biodemography, University of Southern Denmark, Odense C, Denmark.
Rigshospitalet · DKUniversity of Southern Denmark · DKCopenhagen University Hospital · DKUniversité de Rennes · FRUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metformin is the first-line oral treatment for type 2 diabetes mellitus and is prescribed to more than 150 million people worldwide. Metformin's effect as a glucose-lowering drug is well documented but the precise mechanism of action is unknown. A recent finding of an association between paternal metformin treatment and increased numbers of genital birth defects in sons and a tendency towards a skewed secondary sex ratio with less male offspring prompted us to focus on other evidence of reproductive side effects of this drug. Metformin in humans is documented to reduce the circulating level of testosterone in both men and women. In experimental animal models, metformin exposure

Indexed as

Diabetes Mellitus, Type 2Drinking WaterMetforminAnimalsFemaleFertilityHumansMaleRatsReproductionDrinking WaterMetformindevelopmentendocrine disruptorenvironmentmetforminreproductive toxicanttestosteronewildlife

Identifiers

PMID36339411
PMCPMC9627511
OpenAlexW4306834561

What OpenQuestion holds

Textfull text, public
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.