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March 2010 in “International Journal of Andrology” This article reviews multiple entries on the Androlog blog regarding finasteride use, concluding that a 1-mg dose does not adversely affect spermatogenesis or pose a risk during conception or pregnancy.
1 citations
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January 2011 in “Journal of Human Reproductive Sciences” Finasteride may decrease semen quality but not harm sperm production, and stopping the drug can improve semen quality; hyperprolactinemia can cause infertility but is treatable with medication.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Finasteride is risky during pregnancy, but the chance of harm from a male partner taking it is low if handled safely.
This study found that while finasteride effectively improves hair growth in male androgenetic alopecia, it may affect fertility at higher doses, and the evidence on its long-term sexual side effects is inconsistent and requires more rigorous research.
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.