Global trends in semen quality of young men: a systematic review and regression analysis.
Xuefeng LuoChongyang YinYuqing ShiChengchao DuXiangcheng PanPublished in: Journal of assisted reproduction and genetics (2023)
Downward trends in semen quality among global young men were observed in our study, including TSC, SC, and PR. But TM did not appear to be trending down or even to be leveling off. More studies are needed to focus on the causes of the declines.