Spatiotemporal trends in human semen quality

Nature Reviews Urology, Published online: 17 August 2022; doi:10.1038/s41585-022-00626-wSeveral studies over the past few decades have suggested that sperm quality varies by geographical region and might be subject to a temporal decline worldwide. However, the data supporting these conclusions have come from studies of various methodologies and heterogeneous populations, making them unreliable. In this in-depth Review, Chevrier and colleagues discuss the data surrounding discussion of spatiotemporal trends in semen parameters and consider how these trends and the factors promoting them interact.
Source: Nature Reviews Urology - Category: Urology & Nephrology Authors: Source Type: research