Evidence map›Paper›PMID 26423741›Full record

ArticleThe Journal of nutrition2015

Urinary Phytoestrogens Are Associated with Subtle Indicators of Semen Quality among Male Partners of Couples Desiring Pregnancy.

Sunni L Mumford, Sungduk Kim, Zhen Chen, Dana Boyd Barr, Germaine M Buck Louis

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of nutrition, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.4field-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

14 citing papers in PubMed, 33 citations in OpenAlex.

  1. Effect ofLife (Basel, Switzerland) · 2026
    Article
  2. Article
  3. Article
  4. The Role of Genistein in Mammalian Reproduction.Molecules (Basel, Switzerland) · 2023
    Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. 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

5 authors at 2 institutions in 1 country.

Sunni L MumfordDivision of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Department of Health and Human Services, Bethesda, MD; and mumfords@mail.nih.gov.
Sungduk KimDivision of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Department of Health and Human Services, Bethesda, MD; and.
Zhen ChenDivision of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Department of Health and Human Services, Bethesda, MD; and.
Dana Boyd BarrRollins School of Public Health, Emory University, Atlanta, GA.
Germaine M Buck LouisDivision of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Department of Health and Human Services, Bethesda, MD; and.
Eunice Kennedy Shriver National Institute of Child Health and Human Development · USEmory University · US

Funding

DETERMINANTS OF MALE AND FEMALE FECUNDITY AND FERTILITY RESEARCH SITES-275033356N01HD033356 · NICHD · RESEARCH TRIANGLE INSTITUTE · 2004 to 2005
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DETERMINANTS OF MALE AND FEMALE FECUNDITY AND FERTILITY DATA COORDINAT-275033358N01HD033358 · NICHD · THE EMMES CORPORATION · 2004 to 2005
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Intramural NIH HHSNICHD NIH HHS N01-HD-3-3355NICHD NIH HHS N01-HD-3-3356NICHD NIH HHS N01-HD-3-3358
6 · The paper itself

Abstract

backgroundPhytoestrogens have been associated with subtle hormonal changes, although effects on male fecundity are largely unknown.

objectiveWe evaluated associations between male urinary phytoestrogen (isoflavone and lignan) concentrations and semen quality.

methodsThis study was a prospective cohort study of 501 male partners of couples desiring pregnancy and discontinuing contraception. Each participant provided up to 2 semen samples that were analyzed for 35 semen quality endpoints the following day. Linear mixed-effects models were used to estimate associations between baseline urinary phytoestrogen concentrations and semen quality parameters, adjusted for age, body mass index (BMI), research site, and serum lipid and cotinine concentrations.

resultsMost associations between urinary phytoestrogens and semen quality parameters were null. However, select individual phytoestrogens were associated with semen quality parameters, with associations dependent on the class of phytoestrogens and modified by BMI. Specifically, genistein and daidzein were associated with a lower percentage of normal sperm and increased abnormalities in semen morphology, with reduced associations observed as BMI increased (P < 0.05) [percentages (95% CIs) of normal morphology by WHO traditional criteria: genistein, main effect: -5.61% (-9.42%, -1.79%); interaction: 0.19% (0.06%, 0.31%) per log unit increase; daidzein, main effect: -5.35% (-9.36%, -1.34%); interaction: 0.18% (0.05%, 0.32%) per log unit increase]. Enterolactone was associated with fewer abnormalities in semen morphometry and morphology and decreased DNA fragmentation, with reduced associations observed as BMI increased (P < 0.05) [percentages (95% CIs) of abnormalities in the neck and midpiece: enterolactone, main effect: -3.35% (-6.51%, -0.19%); interaction: 0.11% (0.01%, 0.21%) per log unit increase].

conclusionsThese results suggest that male urinary phytoestrogen concentrations characteristic of the US population may be associated with subtle indicators of male fecundity and semen quality but were not associated with couple fecundity.

Indexed as

4-ButyrolactoneAdultBody Mass IndexCholesterolCotinineDNA FragmentationEndpoint DeterminationFemaleFertilityGenisteinHumansIsoflavonesLignansLinear ModelsMalePhytoestrogens2,3-bis(3'-hydroxybenzyl)butyrolactone4-ButyrolactoneCholesterolCotininedaidzeinGenisteinIsoflavonesLignansPhytoestrogensisoflavoneslignansmale fertilityphytoestrogenssemen quality

Identifiers

PMID26423741
PMCPMC4620723
OpenAlexW2175794825

What OpenQuestion holds

Textmetadata
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.