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Grant support

This work was partially supported by the International Nut and Dried Fruit Council (INC) via Grant No. 2015 INC Research Grant (PV15110S). INC is a non-profit entity registered at the Register of Foundations of Catalonia, Spain. Nuts were supplied by Crisolar, Spain. The industrial partners were not involved in the design, implementation, analysis, interpretation of the data, writing or review process of the study. LGT. received a pre-doctoral fellowship from the Generalitat de Catalunya's Department of Health, Barcelona, Spain (grant number SLT01720000047); CP is a recipient of the Instituto de Salud Carlos III Miguel Servet fellowship, Madrid, Spain (grant number CP 19/00189); MR received a fellowship from the Generalitat de Catalunya's Agency for management of Universities and Research Grants, Barcelona, Spain (grant number 2022 FI_B1 00160); and MB received the ICREA Academy 2023 Distinction from the Autonomous Government of Catalonia. The authors are grateful for the support of the Departament de Recerca i Universitats de la Generalitat de Catalunya to the Nutrition and Metabolic Health Research Group (2021 SGR 00213).

Analysis of institutional authors

Bullo, MonicaCorresponding Author

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Article

Dietary Glycemic Index and Load and Semen Quality: ACross-Sectional and Prospective Analysis within the FERTINUTS Trial

Publicated to:World Journal Of Mens Health. 42 (4): 881-889 - 2024-10-01 42(4), DOI: 10.5534/wjmh.230328

Authors: Mateu-Fabregat, Javier; Papandreou, Christopher; Gutierrez-Tordera, Laia; Rojas, Melina; Novau-Ferre, Nil; Mostafa, Hamza; Bullo, Monica

Affiliations

Carlos III Hlth Inst, CIBER Physiol Obes & Nutr CIBEROBN, Madrid, Spain - Author
Hellen Mediterranean Univ, Sch Hlth Sci, Dept Nutr & Dietet Sci, Siteia, Greece - Author
Inst Hlth Pere Virgili IISPV, Reus, Spain - Author
Rovira i Virgili Univ URV, Dept Biochem & Biotechnol, Nutr & Metab Hlth Res Grp, Reus, Spain - Author
Rovira i Virgili Univ, Ctr Environm Food & Toxicol Technol TecnATox, Reus, Spain - Author
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Abstract

Purpose: Infertility is a global health issue and nutrition plays a significant role in fertility outcomes. We aimed to investigate the cross-sectional and prospective associations of glycemic index (GI) and glycemic load (GL) with semen quality parameters in a cohort of healthy young men. Materials and Methods: The study included 106 men aged 18-35 years from the FERTINUTS trial. Dietary intake was estimated through 3-day dietary records and several semen parameters were assessed. Multivariable linear regression analysis with the Least Absolute Shrinkage and Selection Operator (LASSO) approach was employed. Results: The cross-sectional analysis revealed positive associations between GI and GL and total sperm count, sperm concentration, and total motility. In the prospective analysis, baseline GI was associated with increases in pH, vitality, immotile sperm or abnormal midpiece and decreases in total sperm count and motility. Conversely, GL was positively associated with changes in vitality and total sperm count. Conclusions: While these findings suggest that GI may have adverse effects on several sperm quality parameters, the results were not consistently observed in the cross-sectional analysis. However, GL was consistently associated with better sperm quality in both analyses. The impact of carbohydrate quality and quantity on fertility remains uncertain and larger prospective studies are needed.

Keywords

CarbohydratesFertilityGlycemic indexGlycemic loadSemen analysiSemen analysis

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal World Journal Of Mens Health due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 17/126, thus managing to position itself as a Q1 (Primer Cuartil), in the category Urology & Nephrology.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-24:

  • WoS: 2
  • Scopus: 2
  • Europe PMC: 2

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-24:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 19.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 17 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 1.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Additionally, the work has been submitted to a journal classified as Diamond in relation to this type of editorial policy.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: http://hdl.handle.net/20.500.11797/imarina9443117

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Greece.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Mateu-Fabregat, Javier) and Last Author (Bulló Bonet, Mònica).

the authors responsible for correspondence tasks have been Papandreou, Christopher and Bulló Bonet, Mònica.