October 2020 in “Journal of Pakistan Association of Dermatology” This analysis of seven studies explored the impact of finasteride (1mg/day for androgenic alopecia) on sperm concentration, finding that in most studies, sperm concentration increased after stopping treatment, but the largest study showed no change during or after treatment.
June 2022 in “Journal of Experimental Biology and Agricultural Sciences” This study found that steroid hormones influence the quality indicators of fresh and cryopreserved stallion sperm, with testosterone negatively correlated with motility and estradiol positively correlated with survival rate.
49 citations
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December 2007 in “Fertility and Sterility” This case report describes two infertile patients who experienced significant improvements in sperm concentrations six months after stopping finasteride.
38 citations
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December 2010 in “Fertility and Sterility” In this case report, a male patient's semen parameters improved after discontinuing a 1-mg dose of finasteride, suggesting that stopping the medication may benefit infertile men with previous sperm production issues.
34 citations
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January 2004 in “Revista do Hospital das Clínicas” The authors reported that young men with infertility-related conditions experienced improved seminal quality after stopping finasteride, suggesting potential adverse effects on fertility during treatment.