Dog sperm quality decline ‘linked’ to humans

Sperm quality in dogs has diminished over the past three decades, and this could explain the purported decline in human fertility.

There is a potential link between environmental contaminants and fertility, say scientists who discovered chemicals in some commercially available pet foods that had a detrimental effect on sperm.

Researchers at the University of Nottingham believe that the study could explain the reported, significant decline in human semen quality.