Image content influences men's semen quality

S.J. Kilgallon, Leigh Simmons

    Research output: Contribution to journalArticlepeer-review

    162 Citations (Scopus)


    There is increasing evidence from non-human animals that males adjust their ejaculate expenditure according to the risk of sperm competition. In this study we show that, after controlling for lifestyle factors known to influence semen quality, human males viewing images depicting sperm competition had a higher percentage of motile sperm in their ejaculates. Many lifestyle variables were confirmed to influence semen quality, including the recent suggestion that storage of mobile phones close to the testes can decrease semen quality.
    Original languageEnglish
    Pages (from-to)253-255
    JournalBiology Letters
    Publication statusPublished - 2005


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