It's a biological fact that as women and men age, their potential to The quality of the sperm men produce seems to decline as they get older.
In 1969, Sasano and Ichijo first described the decrease in sperm concentration as men age. They reported that.
Arch Ital Urol Androl. 2019 Jan 18;90(4):254-259. doi: 10.4081/aiua.2018.4.254. The aging male: Relationship between male age, sperm quality and sperm.
Suffice it to say that men have no risk of “running out” of sperm with age, as is the case with women and their eggs. However, there are a.