December 2023 in “Urogenital tract infection” Seminal bacteria can lower sperm quality in subfertile men.
54 citations
,
September 2013 in “Fertility and Sterility” Finasteride can reduce fertility in some men, but stopping it increases sperm count.
68 citations
,
February 2019 in “Urology” Hormonal treatment in transgender women reduces semen quality, but stopping treatment may improve it.
1 citations
,
August 2013 in “Fertility and Sterility” Finasteride may improve sperm count in subfertile men with low sperm count.
June 2020 in “Mağallaẗ al-anbār li-l-ʻulūm al-bayṭariyyaẗ” Finasteride reduces fertility in male rats.
77 citations
,
June 2015 in “Nature Reviews Urology” Some common medications can harm male fertility, but many effects can be reversed.
49 citations
,
December 2007 in “Fertility and Sterility” Stopping finasteride improved sperm counts in two men, reducing the need for fertility treatments.
47 citations
,
January 2021 in “Fertility and Sterility” COVID-19 might affect male fertility, but more research is needed to understand the full impact.
15 citations
,
October 2012 in “International Urology and Nephrology” Low-dose finasteride may cause fertility issues, but stopping it can improve sperm quality and lead to pregnancy.
3 citations
,
April 2012 in “Fertility and Sterility” Finasteride may cause infertility in rats by affecting epididymis and sperm function.
October 2017 in “DOAJ (DOAJ: Directory of Open Access Journals)” DA-9401 can protect against finasteride-induced reproductive damage in rats.
18 citations
,
October 2018 in “Journal of The American Academy of Dermatology” Some skin medications can harm male fertility, but they don't seem to cause birth defects from father's exposure.
1 citations
,
September 2013 in “Fertility and Sterility” Finasteride discontinuation increases sperm count in men.
June 2018 in “The Journal of Sexual Medicine” Finasteride does not negatively affect male reproductive function.
Finasteride impairs sperm quality and fertility in rats, even after stopping treatment.
104 citations
,
May 2019 in “F1000Research” Losing weight, fixing varicoceles, and using advanced sperm selection methods improve male infertility treatment outcomes.
195 citations
,
February 2007 in “The Journal of Clinical Endocrinology and Metabolism” Dutasteride and finasteride may reduce sperm count and volume but don't affect movement or shape; effects are reversible after stopping.
11 citations
,
March 2010 in “International Journal of Andrology” Finasteride 1-mg doesn't harm sperm or pregnancy chances.
36 citations
,
February 2011 in “Fertility and Sterility” Finasteride use may cause sperm damage and infertility, stopping it can improve sperm health.
April 2026 in “The Journal of Urology” Finasteride and dutasteride reduce semen quality, with dutasteride having a stronger negative effect.
35 citations
,
October 2004 in “Biology of Reproduction” PNU157706 reduced rat sperm movement and fertility without affecting offspring health.
May 2025 in “Veterinary Medicine and Science” Melatonin improved reproductive function in male Pomeranian dogs with Alopecia X, but more research is needed.
A very low-calorie ketogenic diet led to weight loss and improved metabolic and hormonal health in obese men, with better sperm motility.
46 citations
,
August 2022 in “Journal of Endocrinological Investigation” COVID-19 temporarily affects male reproductive health, but sperm and testosterone levels generally return to normal after three months.
1 citations
,
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.
March 2013 in “Reactions Weekly” A man's fertility improved after he stopped taking finasteride but worsened again when he restarted the medication.
8 citations
,
January 2017 in “Fertility and Sterility” Urologic diseases and treatments in older men can negatively affect fertility, and doctors should talk to patients about this.
2 citations
,
January 2015 in “Springer eBooks” Environmental factors and exposure to toxins may contribute to male infertility by affecting sperm and hormone function.
Finasteride improves hair but may reduce sperm quality at higher doses.
38 citations
,
December 2010 in “Fertility and Sterility” Finasteride may cause male infertility, stopping it can help.