"Scientists say discovery may be linked to decades-long decline in sperm counts in men around the world".

"Microplastics have been found in human testicles, with researchers saying the discovery might be linked to declining sperm counts in men.

The scientists tested 23 human testes, as well as 47 testes from pet dogs. They found microplastic pollution in every sample.

The human testicles had been preserved and so their sperm count could not be measured. However, the sperm count in the dogs’ testes could be assessed and was lower in samples with higher contamination with PVC. The study demonstrates a correlation but further research is needed to prove microplastics cause sperm counts to fall.

Sperm counts in men have been falling for decades, with chemical pollution such as pesticides implicated by many studies. Microplastics have also recently been discovered in human blood, placentas and breast milk, indicating widespread contamination of people’s bodies. The impact on health is as yet unknown but microplastics have been shown to cause damage to human cells in the laboratory."

Damian Carrington reports for the Guardian May 20, 2024. [2]