"When we see shorter anogenital lengths, it's telling us there is lower testosterone activity in the womb and it may have implications for fertility and reproductive health down the road," said Emily Barrett, a biostatistics and epidemiology professor at the Rutgers School of Public Health, and the study's lead author.
"The findings come amid growing concern over global drops in semen quality, which have so far been tied to exposure to other toxins like PFAS and phthalates. Sperm concentration levels have dropped by 51% in recent decades, and the Rutgers study is among the first to suggest that the air around is contributing to that, as well," Barrett added.
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