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Prior research has found inconsistent effects of diversity on group performance. The present research identifies hormonal factors as a critical moderator of the diversity-performance connection. Integrating the diversity, status, and hormone literatures, we predicted that groups collectively low in testosterone, which orients individuals less toward status competitions and more toward cooperation, would excel with greater group diversity. In contrast, groups collectively high in testosterone, which is associated with a heightened status drive, would be derailed by diversity. Analysis of 74 randomly assigned groups engaged in a group decision-making exercise provided support for these hypotheses. The findings suggest that diversity is beneficial for performance, but only if group-level testosterone is low; diversity has a negative effect on performance if group-level testosterone is high. Too much collective testosterone maximizes the pains and minimizes the gains from diversity.
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http://dx.doi.org/10.1177/0956797617744282 | DOI Listing |
Indian J Microbiol
June 2025
Inter University Centre for Evolutionary and Integrative Biology, University of Kerala, Kariavattom, Kerala India.
Unlabelled: Study of gut microbiome is an emerging area in modern research with over one trillion population is known to inhabit the gut of organisms. The gut microbiome constitutes bacteria, viruses, protozoa and fungi and their collective genetic material present in the gastrointestinal tract. It is an essential part of a species' ecology and influenced by the diet and phylogeny of the host.
View Article and Find Full Text PDFWorld J Mens Health
June 2025
Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan.
Boosting testosterone production and maintaining its adequate concentrations in males is still a critical area of the ongoing research. Vitamin B₆ (VB6), also named pyridoxine, is an essential nutrient and biochemically an organic cofactor in various enzymatic reactions that activate several catabolic and anabolic processes, including energy production, neurotransmitter synthesis, immune system function. While various studies have revealed an indirect association between testosterone and VB6, a collective and comprehensive review of its role in testosterone synthesis has been lacking.
View Article and Find Full Text PDFPLoS One
June 2025
Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
Background: Testosterone levels are closely associated with visceral obesity, insulin resistance, and lipid metabolism. The objective of this study was to investigate the associations among eight indicators related to visceral obesity, insulin resistance, lipid metabolism, and testosterone levels.
Methods: The data were obtained from a cross-sectional survey based on National Health and Nutrition Examination Survey (NHANES) 2013-2016.
Proc Natl Acad Sci U S A
June 2025
Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706.
Historically, endocrine cells were perceived to coordinate their output in a uniform manner. Recently however, single-cell technologies have uncovered heterogeneity within these populations, indicating that individual cells may operate as independently regulated units. Using high-resolution tools such as single-molecule fluorescent in situ hybridization (sm-FISH) and single-cell RNA sequencing (scRNA-seq), we investigated the contributions of individual and the collective of fetal Leydig cells to androgen production over time during mouse testis development.
View Article and Find Full Text PDFNutrition
May 2025
Epidemiology Group, Laboratory of Biomedicine Translational, University of the Extreme South of Santa Catarina, Criciúma, Santa Catarina, Brazil.
Objective: To evaluate the effects of a low-carbohydrate diet associated with strength training on the clinical signs of polycystic ovary syndrome (PCOS).
Research Methods And Procedures: A randomized clinical trial was carried out including 29 women over 18 years old diagnosed with PCOS, randomized into two groups, with follow-up for 12 weeks: the low-carbohydrate diet group associated with strength exercise (LCDE); and the standard diet group associated with strength exercise (SDE). We evaluated manifestations of acne, hirsutism by the Ferriman-Gallwey scale and alopecia by the Ludwig-Savin scale, and assessed laboratory tests for total and free testosterone, dehydroepiandrosterone, follicle-stimulating hormone, and luteinizing hormone.