Contrary to other recent research, study finds no evidence of decline – but conclusions disputed by other fertility experts
Despite there being no significant changes over a six-year period, the study found there was a decline in sperm quality during the Covid years.Despite there being no significant changes over a six-year period, the study found there was a decline in sperm quality during the Covid years.A row has broken out over falling sperm counts after a new study suggested fears of a “spermageddon” may have been exaggerated.
A decline in quality was confirmed when the team looked only at samples from men who were accepted as donors, including those who made at least eight donations between 2019 and 2022. But Pacey said the decline was unlikely to be down to the virus itself as infection rates were not high in Denmark and Covid only affects sperm quality temporarily.
“We conducted two systematic reviews and meta analyses to study global long-term trends in sperm concentration and total sperm count. The current study is simply irrelevant for this question,” he said. “It was conducted in one country, over a short period of time and among a potentially biased population.”
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