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Sperm Count Among Men Drops 50 Percent Worldwide

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Sperm Count Among Men Drops 50% Worldwide

Sperm count among men worldwide is declining at an accelerated rate after halving in the last 40 years, according to a large new study released Tuesday.

The study, conducted by Israeli epidemiologist Hagai Levine, updates a 2017 study criticized for including only North America, Europe, Australia, and New Zealand.

The new study includes data from over 57,000 men collected across 223 studies in 53 countries, making it the largest meta-analysis ever conducted.

It confirmed the 2017 findings that sperm counts in men have halved over the last 4 decades with the addition of new countries.

According to the new study, the concentration of sperm in men who were not known to be infertile fell by more than 51% between 1973 and 2018, from 101.2 million sperm to 49 million sperm per millimetre of sperm.

“Even more, data suggest that this worldwide decline is continuing at an accelerated pace in the twenty-first century,” according to the study announced in the journal Human Reproduction Update.

Sperm counts are declining at a rate of about 1.1 percent per year, according to the study.

More action and research are urgently required “to prevent further disruption of male reproductive health,” according to the report. ‘We honestly don’t know why.’

Sperm Count men

Sperm count is not the only factor influencing fertility; the speed of male sperm movement, which was not measured in the study, is also important.

And the lower male sperm concentration of 49 million is still above the World Health Organization’s “normal” range of 15 million to 200 million sperm per millilitre.

According to Sarah Martins Da Silva, a reproductive Medicine expert at the Scotland’s University of Dundee who wasn’t involved in the study, the rate of decline in sperm count has more than doubled since 2000.

“And we have no idea why this is happening,” she added.

“Men’s exposure to pollutants, plastics, smoking of tobacco, drugs and pharmaceutical medication, as well as lifestyle factors such as obesity and poor diet, have all been proposed as contributing factors, though the effects are quite poorly understood and poorly defined.”

Other experts said the new sperm study did not dispel their doubts about the 2017 study.

“I remain skeptical about the quality of the data in the published papers, particularly in the distant past,” Allan Pacey at the University of Sheffield in the UK told USA Today.

Pacey praised the “very elegant meta-analysis” but added that he believes we have “simply gotten better” at counting sperm, which could explain the declining rates.

On the other hand, Martins Da Silva dismissed critics of the sperm study’s findings, saying that “the sperm numbers and consistent findings are difficult to ignore.”

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