Evidence map›Paper›PMID 32164645›Full record

ArticleBMC public health2020

The potential role of central obesity in male infertility: body mass index versus waist to hip ratio as they relate to selected semen parameters.

Márton Keszthelyi, V Anna Gyarmathy, András Kaposi, Zsolt Kopa

Open access · goldAbstract read
In one paragraph

Article in BMC public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
4.8field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  10. High-Fat Diets Disturb Rat Epididymal Sperm Maturation.International journal of molecular sciences · 2025
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  13. Review
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  15. Review
  16. Self-reported Male Infertility and Metabolic Disturbance: A Cross-Sectional Study.International journal of endocrinology and metabolism · 2023
    Article
  17. Article
  18. Article
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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

4 authors at 2 institutions in 2 countries.

Márton KeszthelyiDepartment of Urology, Andrology Centre, Semmelweis University, Üllői út 78/b, Budapest, 1082, Hungary. keszthelyi.marton@med.semmelweis-univ.hu.ORCID http://orcid.org/0000-0003-4886-3481
V Anna GyarmathyEpiConsult LLC, 8 The Green, STE A, Dover, DE, 19904, USA.
András KaposiDepartment of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó u. 37-47, Budapest, 1094, Hungary.
Zsolt KopaDepartment of Urology, Andrology Centre, Semmelweis University, Üllői út 78/b, Budapest, 1082, Hungary.
Semmelweis University · HUJohns Hopkins University · US

Funding

Semmelweis Egyetem EFOP-3.6.3-VEKOP-16-2017-00009
6 · The paper itself

Abstract

backgroundLittle is known about the potential role of central obesity among men. Our first aim was to confirm what is already known from prior research, namely that both BMI and WHR are inversely associated with selected semen parameters. Our second aim was to examine the potential role of central obesity by assessing if there was a difference between BMI and WHR regarding their relationships to these selected semen parameters.

methodsIn this cross-sectional study between January 2011 to January 2018, we analyzed semen samples from 1169 patients who visited an andrology clinic in Budapest for infertility reasons. Variables assessed were: body measurements (height, weight, waist circumference, and hip circumference), and the results of semen analysis (sperm concentration, total sperm count, progressive sperm motility, and normal sperm morphology).

resultsThe mean height and weight were 180.6 cm and 87.3 kg, respectively - the mean BMI was 26.8. The mean waist and hip circumferences were 100.9 cm and 94.8 cm, respectively - the mean waist to hip ratio was 0.94. The mean sperm concentration, total sperm count, and percents of progressive motility and normal morphology were 48.7 M/ml, 165 million, 21.2, and 4.8%, respectively. Both BMI and WHR were significant correlates in all semen parameter regression models. When comparing the parameter estimates for BMI with those for WHR for each semen parameter, the parameter estimate for WHR was significantly lower (indicating a stronger negative association) than that for BMI for progressive motility and total sperm count, but not for normal morphology or concentration.

conclusionsOur study is the first to examine, using a large patient sample, the potential role of central obesity by comparing the difference between BMI and WHR as they relate to selected semen parameters. Our findings indicate a potential role of central obesity for progressive motility and total sperm count, but not for normal morphology and concentration. Despite the limitations and the exploratory nature of this study, we can conclude that our results point to a potential role of central obesity in male infertility, but this finding should be confirmed and further explored in future research.

trial registrationThe trial was retrospectively authorized after the data collection on September 24, 2018. Registration number: SE RKEB: 169/2018.

Indexed as

Body Mass IndexWaist-Hip RatioAdolescentAdultAgedCross-Sectional StudiesHumansInfertility, MaleMaleMiddle AgedObesity, AbdominalSemen AnalysisSperm CountSperm MotilityYoung AdultBody mass indexMale infertilityObesityStatistical modellingWaist to hip ratio

Identifiers

PMID32164645
PMCPMC7066798
OpenAlexW3011386103

What OpenQuestion holds

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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.