Geographical Differences in Male Infertility Between the United States and Canada: Insights From the Andrology Research Consortium

    April 2023 in “ Andrologia ”
    Kian Asanad, Keith Jarvi, Katherine Lajkosz, James F. Smith, Susan Lau, Kirk Lo, Ethan Grober, Mary K. Samplaski
    TLDR American men are older, more obese, and have longer infertility than Canadian men.
    The study compared 6,462 men from the US and Canada, revealing that American men are older, more obese (63% vs. 26%), and have a longer duration of infertility (4.5 years vs. 3.6 years). Lifestyle factors differed, with higher tobacco and marijuana use in Canada and higher alcohol use in the US. The study also found that 4% of US men used exogenous testosterone and 5% used other steroids, compared to <1% in Canada. ART usage varied, with IUI more common in Canada and IVF more common in the US. The research highlights the need for US reproductive urologists to consider medication history due to reversible infertility causes, despite limitations like nonresponse and recall bias.
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