A large-scale meta-analysis has confirmed that there has been a drop in average sperm counts in men — a situation affecting countries around the world and that shows no sign of slowing down.
Jean-Marc Ayoubi, MD, head of the Department of Gynecology and Obstetrics and Reproductive Medicine at Foch Hospital in Suresnes, France, gives us the inside story.
In 1973, the average sperm count in men was 101 million per mL. In 2018, this figure had dropped by half — and this trend is speeding up, since the average drop in gametes in the sperm of the male population has more than doubled over the past 50 years, going from 1.16% between 1973 and 2000 to 2.64% per year between 2000 and 2018.Human Reproduction Update.
How can this drop in sperm count be explained? What factors other than lifestyle and environmental aspects can impact fertility problems?asked Ayoubi these very questions. Ayoubi was not a co-author of the meta-analysis published inAyoubi: For more than 20 years, the results have been stacking up to reveal a drop in the number of sperm found in semen analyses. In itself, the information is not new. Nevertheless, the Levine et al meta-analysis is extremely important because it is based on high-quality research, and the results are now unequivocal. Until now, the data mainly came from industrialized countries, but in this meta-analysis, the data come from all continents.
Just like climate skeptics, up to now we could hide behind a sort of"yes, but" response. Now though, the drop in the average sperm count has been confirmed, it's a worldwide phenomenon, it's significant, and it's getting worse: soon it will reach 3% per year. It's no longer possible to turn a blind eye: now is the time to act.
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
In the hunt for a male contraceptive, scientists look to stop sperm in their tracksFor decades birth control research focused on women. Now there's a new push to develop gels, pills or other products that could keep men from getting their partners pregnant.
Read more »
The surprising strength that makes the USMNT a legit World Cup semifinal threatDOHA, Qatar — Tyler Adams sank to his knees, and Yunus Musah collapsed onto his butt, then rolled onto his back. Tim Ream roared with every last ounce of energy he had, then keeled over. They and a dozen teammates had all just 'suffered,' as Adams and Musah said, for 107 minutes at the Al Thumama Stadium on Tuesday night. Some had run more than 21 miles over three World Cup games. They crumbled to Qatari grass because the final whistle on their 1-0 win over Iran had been 'such a relief,' Musah said. Whereas they'd energized a nation and impressed the world in their first two games, this had been excruciating.
Read more »
Police search for suspect after pedestrian struck, killed on SR 99 near LynnwoodFollowing the crash, the male driver of the vehicle involved fled the scene on foot.
Read more »
EXPLAINER: What do we know about the Colorado bomb threat?More than a year before police say Anderson Lee Aldrich killed five people and wounded 17 others at a gay night club in Colorado Springs, Aldrich was arrested on allegations of making a bomb threat that led to the evacuation of about 10 homes
Read more »