ArticleJournal of assisted reproduction and genetics2025
Decrease or increase in sperm concentration? The data among fertile Chinese males in 40 years.
Article in Journal of assisted reproduction and genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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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.
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Who cites it
1 citing paper in PubMed.
- Moderate-intensity physical activity is associated with favorable semen-parameter changes and normalization of selected abnormalities in men with impaired semen quality.Reproductive biology and endocrinology : RB&E · 2026Observational
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Authors and funding
6 authors.
Funding
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Abstract
purposeThis study aims to investigate the trends in sperm concentration among fertile Chinese males over the past four decades, addressing whether there has been a change in sperm concentration and identifying potential causes.
methodsThe research included 94 Chinese and English literature sources, covering 27 provinces and cities across China, encompassing a total of 14,634 individuals. A least squares linear regression model was applied to analyze sperm concentration data.
resultsThe analysis indicated a significant downward trend overall from 1984 to 2023 (P = 8.42e - 10). A single-factor analysis of variance was performed, categorized by the year of sample collection, showing a decline in sperm concentration across each decade of the collection years (P = 1.01e - 08), with the most significant decline noted between 2004 and 2013 (P = 0.0035).
conclusionThe findings suggest a general decline in sperm concentration among fertile Chinese males over the past forty years, with a more pronounced decline after the twenty-first century, potentially associated with escalating environmental pollution due to heavy industrialization, poor lifestyle habits, and radiation from electronic devices. Further research is essential to elucidate the causes of and broader implications associated with this downward trend.
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