After halving in the past 40 years, the sperm count of men around the world is declining at an alarming rate. Large, new studyTuesday, calling for action against the decline
Hagai, an Israeli epidemiologist, conducted the study. Updates 2017 researchThese were only considered to include North America, Europe and Australia.
The largest study to date includes data from more 57,000 men from 53 countries. This is the largest ever. meta-analysisever done on the subject.
The 2017 study that confirmed the finding that sperm counts had fallen half a century ago was supported by the addition of countries.
From 1973 to 2018, the concentrations of sperm among men not considered infertile dropped by more than 51%, from 101.2million to 49million sperm per milliliter. Study finds.
“Furthermore data suggest that this global decline is continuing at an accelerated rate in the 21st Century,” According to the studyPublished in the journal Human Reproduction Update.
The rate at which sperm counts fall is around 1.1 percent per year. Researchers found research.
To prevent any further disruptions to male reproductive health, more action and research is needed. Additional.
“We are genuinely unsure why,”
Sperm count is not the only factor that affects fertility – the speed of sperm movement, which was not measured in the study, also plays a crucial role.
The lower sperm count of 49 million is still quite high. The range above what is considered normal by the World Health Organization – between 15 million and 200 million sperm per milliliter.
Sarah Martins da Silva (an expert in reproductive Medicine at the University of Dundee in Scotland) said the study showed that the rate of decline of the sperm count has halved since 2000.
“And we really don’t understand why,” she said.
“Exercise to pollution, plastics smoking, drugs, and prescription medication have all been suggested as contributing factors, although the effects are unclear and poorly understood.”
Experts also said that the new study didn’t resolve their doubts about 2017’s research.
Allan Pacey, a researcher at the University of Sheffield in the UK, told AFP that he is still concerned about the quality of data in papers published in the past.
Pacey hails the “very elegant Meta-analysis”, and says he believes that we have “simply improved” in the difficult task, counting sperm. Pacey could also be able to explain falling rates.
Martins da Silva, however, dismissed criticisms of the study’s findings and said that “the consistent numbers and findings are hard to ignore”.
