June 2026 in “The Journal of Sexual Medicine” This study determined that men taking finasteride 1 mg/day exhibited significantly reduced sperm production and morphology compared to controls, although there were no notable changes in hormonal, sexual, or psychological function.
68 citations
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February 2019 in “Urology” Hormonal treatment in transgender women reduces semen quality, but stopping treatment may improve it.
April 2026 in “The Journal of Urology” This study found that men taking 1 mg/day of finasteride had significantly reduced sperm production and morphology but similar hormonal, sexual, and psychological profiles compared to controls, suggesting finasteride affects semen quality without altering other physiological functions.
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August 2013 in “Fertility and Sterility” Finasteride may improve sperm count in subfertile men with low sperm count.
54 citations
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September 2013 in “Fertility and Sterility” This study found that discontinuing finasteride led to a significant increase in sperm counts for most men with reduced fertility, though hormone levels and other semen parameters remained unchanged.