February 2026 in “Molecular Imaging and Radionuclide Therapy” High-dose radioactive iodine therapy does not harm fertility in thyroidectomy patients.
June 2022 in “Journal of Experimental Biology and Agricultural Sciences” Higher testosterone harms sperm motility, while higher estradiol improves sperm survival.
5 citations
,
September 2024 in “Stem Cell Research & Therapy” Sertoli cell transplants can reduce inflammation and improve sperm quality.
16 citations
,
January 2017 in “Asian journal of andrology/Asian Journal of Andrology” Men who start puberty later may have lower sperm quality and different hormone levels in adulthood.
January 2018 in “日本薬理学会年会要旨集 =” Stopping finasteride improves sperm quality but not semen volume in young men.
August 2015 in “Dermatologica Sinica” Men with severe hair loss may have poorer sperm quality.
77 citations
,
June 2015 in “Nature Reviews Urology” Some common medications can harm male fertility, but many effects can be reversed.
47 citations
,
January 2021 in “Fertility and Sterility” COVID-19 might affect male fertility, but more research is needed to understand the full impact.
23 citations
,
January 2007 in “Archives of Andrology” Finasteride may negatively affect male fertility.
18 citations
,
July 2020 in “Basic and Clinical Andrology” Wait 3 months after COVID-19 before trying assisted reproduction and further research is needed on COVID-19's effects on male hormones and fertility.
1 citations
,
September 2023 in “Journal of Education Health and Sport” Anabolic-androgenic steroids are dangerous and educating people about their risks is essential.
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.
Finasteride impairs sperm quality and fertility in rats, even after stopping treatment.
15 citations
,
January 2017 in “Advances in Experimental Medicine and Biology” 5α-Reductase inhibitors can negatively affect male sexual function and, in some cases, significantly reduce sperm count, but these effects may be reversible.
December 2023 in “Urogenital tract infection” Seminal bacteria can lower sperm quality in subfertile men.
June 2021 in “Archives of Advances in Biosciences” Finasteride reduces sperm count and quality and alters hormone levels in mice.
Finasteride improves hair but may reduce sperm quality at higher doses.
68 citations
,
February 2019 in “Urology” Hormonal treatment in transgender women reduces semen quality, but stopping treatment may improve it.
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.
January 2025 in “Indian Journal of Animal Research” Herbal supplements improved semen quality in bulls.
104 citations
,
October 1999 in “The Journal of Urology” Finasteride doesn't harm male fertility or sperm quality, but may slightly reduce ejaculate volume.
35 citations
,
June 2005 in “The Milbank Quarterly” The conclusion is that formalizing how past decisions influence current health technology assessments could improve the credibility and defense of coverage decisions.
4 citations
,
October 2023 in “Fertility and Sterility” Some medications and supplements can affect male fertility, with some improving and others harming sperm quality.
February 2025 in “Intisari Sains Medis” PDRN from salmon may slow skin aging by improving skin quality and reducing inflammation.
October 2010 in “Journal of Men's Health” Larger prostate size in older men may be linked to poorer semen quality and fertility issues.
17 citations
,
January 2013 in “Our Dermatology Online” Dutasteride mesotherapy helps treat male hair loss but may harm sperm and sexual function.
February 2026 in “Andrology” Post-orchidectomy semen has better DNA integrity for fertility treatments.
3 citations
,
January 1993 in “Toxicological Sciences” 2-Ethylhexanoic acid harms fertility and delays development in rats.
1 citations
,
January 2015 in “Journal of Clinical Toxicology” Babies were mostly born healthy from fathers who took finasteride, but some pregnancies ended early; more research is needed.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Keyora Lycopene 23 in 1 Man's Multi-Vitamin improves male reproductive health and metabolism.