MALE FACTOR INFERTILITY: Declining sperm counts — the never-ending story

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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.

Refers to Levine, H. et al. Temporal trends in sperm count: a systematic review and meta-regression analysis. Hum. Reprod. Update (2017)

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