Researchers from MIT and Harvard have “re-evaluated a 2017 review that warned of a growing global sperm-count crisis and associated decline in male fertility and concluded the review vastly overstated the situation,” reports Robert Preidt for U.S. News & World Report.
In an article for The Guardian, graduate student Marion Boulicault details her new findings that suggest recent studies showing declining male fertility are overstated. “The lesson from the research on sperm decline is not that we are facing imminent human extinction (at least not for sperm-related reasons),” writes Boulicault. “Rather, it’s the more banal but accurate fact that there’s much we don’t know about the relationship between men’s reproductive health and environmental pollution.”
The Huffington Post reports on new MIT research examining how sperm cells travel and function. The team’s findings, which show how sperm travel upstream so efficiently, could lead to advances in artificial insemination.