Researchers tested 23 human testes and 47 testes from pet dogs. After dissolving the tissue samples and analysing the plastic remnants, they found microplastic pollution in every single sample!

The temperature of the testes is at issue: In order for testes to produce sufficient quality and quantity of sperm, the temperature of testes must be lower than the core body temperature.

That's why the testes hang down, away from the body, for most mammals. So when you wear tight underwear, the resulting increase in temperature can damage the sperm, and potentially your fertility ...

Two hormones are critical in normal sex differentiation. The testes of normal 46,XY males secrete both Müllerian Inhibiting Substance (also known as MIS or antimüllerian hormone) and ...

Spermiation—the release of mature spermatozoa from Sertoli cells into the seminiferous tubule lumen—occurs by the disruption of an anchoring device known as the apical ectoplasmic ...

People with dementia have 10 times higher levels of microplastics in their brains than other humans, the study shows, but ...

A lack of oxygen in the testes, or testis hypoxia, caused by chronic medical conditions -- such as sleep apnoea or varicocele -- can be a sustained threat to reproductive health, lead author, Tessa ...

In a new study, health sciences researchers at the University of New Mexico (UNM) have found microplastics in human brain tissue in concentrations much higher than in other organs. In addition, the ...