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Since the 1970s, several studies found that sperm concentration (SC) and total sperm count (TSC) constantly worsened over time, mainly in high‐income countries. This study aimed to evaluate whether the decreasing trend in sperm count is continuing in Western European countries and the USA; this study performed a systematic review and meta‐regression analysis. In this study, Embase and Pubmed/Medline were searched for papers published in English in the 2000–2020 period limiting the search to data collected in the USA and Western European countries. This analysis shows no significant trends in SC in the USA and selected Western European countries.
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