Temporal trends in sperm count: a systematic review and meta-regression analysis of samples collected globally in the 20th and 21st centuries | Human Reproduction Update | Oxford Academic
▻https://academic.oup.com/humupd/advance-article/doi/10.1093/humupd/dmac035/6824414
This analysis is the first to report a decline in sperm count among unselected men from South/Central America–Asia–Africa, in contrast to our previous meta-analysis that was underpowered to examine those continents. Furthermore, data suggest that this world-wide decline is continuing in the 21st century at an accelerated pace. Research on the causes of this continuing decline and actions to prevent further disruption of male reproductive health are urgently needed.
Ben Wilson sur Twitter
▻https://twitter.com/BenWilsonTweets/status/1598091125658914819
New sperm meta-analysis. Big takeaways:
• Sperm reduction is not localized, happening globally
• 50% reduction in avg sperm count since 1973
• Following this trend, the average man will not be able to have children unassisted by 2050