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Male factor infertility

Declining sperm counts — the never-ending story

Nature Reviews Urology volume 14, pages 645–646 (2017)Cite this article

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A recent systematic review on worldwide declining trends in sperm counts has fuelled alarming reports in national and international news media. However, methodological issues exist with data gathering and analysis precluding any conclusion and no solid data exist to indicate increasing frequency of couple infertility during past decades.

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Authors and Affiliations

  1. Jens Peter Bonde is at the Department of Occupational and Environmental Medicine, Bispebjerg-Frederiksberg University Hospital, Bispebjerg Bakke 23, 2400 Copenhagen NV, Denmark.,

    Jens Peter Bonde

  2. Egbert te Velde is at the Department of Public Health, Erasmus University Medical Center, POBox 2040, 3000 GA, Rotterdam, The Netherlands.,

    Egbert te Velde

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  1. Jens Peter Bonde
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  2. Egbert te Velde
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Correspondence to Jens Peter Bonde.

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The authors declare no competing financial interests.

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Bonde, J., te Velde, E. Declining sperm counts — the never-ending story. Nat Rev Urol 14, 645–646 (2017). https://doi.org/10.1038/nrurol.2017.153

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