“The ubiquitous existence of microplastics and nanoplastics raises concerns about their potential impact on the human reproductive system,” the study, published in the journal Toxicological Sciences, states.
“Limited data exists on microplastics within the human reproductive system and their potential consequences on sperm quality.” To find out more, the scientists tested 23 human testes, and 47 testes from pet dogs. Microplastic pollution was found in all 70 samples - though with “significant inter-individual variability.”
Sperm counts in western men have more than halved in the last few decades, with air pollution and exposure to pesticides frequently cited as factors. One expert believes that pollution is causing penises to shrink, as well as lowering sperm count.
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