We measured eight urinary PAH metabolites as exposure markers.
Associations of urinary PAH metabolites with semen quality, sperm apoptosis and STL were assessed in college students.
Urinary 1-OHPyr and 1-OHNap were negatively associated with STL.
No significant associations between urinary PAH metabolites and semen quality or sperm apoptosis were found.
B[a]P shortened STL and decreased the telomerase expression in germ cells in vivo animal experiments.