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Temporal trends in sperm count: a systematic review and meta-regression analysis

Hagai Levine1,2, Niels Jørgensen3, Anderson Martino-Andrade2,4

  • 1Braun School of Public Health and Community Medicine, Hadassah-Hebrew University, the Hebrew University Center of Excellence in Agriculture and Environmental Health, Ein Kerem Campus, PO BOX 12272, Jerusalem 9110202, Israel.

Human Reproduction Update
|October 6, 2017
PubMed
Summary

Sperm counts have significantly declined globally since 1973, with a 50-60% drop in Western countries. This trend, particularly in men unselected by fertility, necessitates urgent research into its causes and public health implications.

Keywords:
andrologyenvironmental effectsepidemiologyhuman reproductionmale infertilitymeta-analysissemen analysissemen qualitysperm countsystematic review

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