1 citations
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February 2018 in “The Journal of Sexual Medicine” Ultrasound shows 96% of young men with erectile dysfunction after using finasteride have abnormal penile tissue.
May 2022 in “Endocrine Abstracts” Finasteride may cause sexual dysfunction by reducing epinephrine levels.
2 citations
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January 2011 in “Yearbook of Urology” Stopping finasteride can improve sperm count in infertile men.
February 2023 in “Sexual Medicine Reviews” 
June 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Finasteride, a hair loss drug, can cause long-lasting sexual side effects like low libido and erectile dysfunction.
54 citations
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September 2013 in “Fertility and Sterility” Finasteride can reduce fertility in some men, but stopping it increases sperm count.
3 citations
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February 2013 in “The Journal of Sexual Medicine” Finasteride may cause lasting sexual side effects, but more research is needed.
June 2014 in “The Journal of Urology” May 2003 in “Reactions Weekly” 
112 citations
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July 2012 in “The Journal of Sexual Medicine” Finasteride may cause long-lasting sexual side effects.
36 citations
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September 2001 in “Journal of The European Academy of Dermatology and Venereology” Finasteride doesn't reduce sexual function in people with hair loss.
49 citations
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December 2007 in “Fertility and Sterility” Stopping finasteride improved sperm counts in two men, reducing the need for fertility treatments.
September 2017 in “Hair transplant forum international” 
December 2013 in “Reactions Weekly” Some men taking finasteride for hair loss experienced anxiety, depression, and sexual problems, which sometimes continued after stopping the medication.
October 2007 in “Nature Clinical Practice Urology” May 2022 in “Reactions Weekly” January 2001 in “亚洲男性学杂志：英文版” Men's fertility and sexual health decline with age, but some remain fertile into their eighties.
1 citations
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August 2013 in “Fertility and Sterility” Finasteride may improve sperm count in subfertile men with low sperm count.
Certain medications can negatively impact male fertility.
2 citations
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June 2009 in “PubMed” 
July 2021 in “Reactions Weekly” Man experienced lasting sexual dysfunction from finasteride, but malpractice claim was rejected.
2 citations
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August 2011 in “Cochrane Database of Systematic Reviews” September 2014 in “PubMed Central” BPH treatments can cause sexual side effects affecting quality of life.
2 citations
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September 2007 in “Fertility and Sterility” Stopping Propecia may improve sperm count and fertility.
2 citations
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January 2004 in “Korean Journal of Andrology” 
223 citations
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December 2010 in “The Journal of Sexual Medicine” Some patients taking finasteride or dutasteride may have ongoing sexual problems and depression even after stopping the medication.
March 2008 in “European Urology Supplements” Finasteride and dutasteride can affect sexual function in BPH patients.
May 2024 in “Reactions weekly” 
44 citations
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July 2004 in “Archives of Dermatology” Finasteride for hair loss has minimal impact on sexual function.
January 2021 in “Reactions Weekly” Man experienced lasting sexual issues and stress from finasteride, accused doctor of malpractice.