Prenatal exposure to air pollution may hurt reproductive health in adult men

In-utero exposure to common air pollutants may lower semen quality and increase the risk of reproductive-system disease in men.

A peer-reviewed Rutgers University study looked at whether exposure to particulate matter, called 2.5 (PM2.5), and nitrogen oxide may shorten the distance between the anus and genitals, or the anogenital distance, in developing foetuses and newborns.