December 2023 in “Urogenital tract infection” Seminal bacteria can lower sperm quality in subfertile men.
Dutasteride did not change rat spermatogenesis or oxidative stress but needs more research.
October 2024 in “Endocrinology Insights” The Bethesda system is effective for identifying thyroid cancer but has low sensitivity.
May 1961 in “Tumori Journal” Vitamin A treatment reduced abnormal cell growth and improved skin conditions in rats with tumors.
48 citations
,
December 2019 in “Reproductive Biology and Endocrinology” More research is needed to confirm sperm DNA fragmentation as a reliable tool for diagnosing male infertility.
11 citations
,
November 2023 in “Journal of Functional Biomaterials” The ALGCS/GO30 scaffold effectively boosts mouse spermatogonial stem cell growth.
2 citations
,
March 2022 in “Laboratory Animal Research” A mild botulinum toxin injection improved sperm production and movement in aging mice.
2 citations
,
October 2000 in “The Journal of Urology” Finasteride daily doesn't affect sperm production or semen in young men.
January 2013 in “Reproductive Biology”
5 citations
,
September 2024 in “Stem Cell Research & Therapy” Sertoli cell transplants can reduce inflammation and improve sperm quality.
2 citations
,
December 2001 in “PubMed” 2 citations
,
October 1999 in “The Journal of Urology”
7 citations
,
January 2012 California Ground Squirrel hair can indicate environmental health by showing element accumulation.
91 citations
,
July 2004 in “Journal of Biological Chemistry” Overexpressing SSAT enzyme reduces prostate tumor growth in mice.
79 citations
,
December 1990 in “Clinical endocrinology” The testes control steroid production through complex interactions involving various cells and signaling molecules.
77 citations
,
June 2015 in “Nature Reviews Urology” Some common medications can harm male fertility, but many effects can be reversed.
72 citations
,
October 1998 in “Baillière's clinical endocrinology and metabolism” Long-term testosterone therapy can cause hormone suppression, affect prostate and heart health, and alter physical characteristics, but does not increase prostate cancer risk and needs more research for full risk assessment.
70 citations
,
March 2016 in “Urologic Clinics of North America” The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.
69 citations
,
February 1983 in “Gut” Men with coeliac disease may have hormone imbalances that could affect sexual function, but these can improve with better gut health.
68 citations
,
February 2019 in “Urology” Hormonal treatment in transgender women reduces semen quality, but stopping treatment may improve it.
67 citations
,
April 1988 in “The Journal of Clinical Endocrinology & Metabolism” A subtle androgen receptor abnormality can allow normal male development and sometimes fertility despite partial androgen resistance.
54 citations
,
September 2013 in “Fertility and Sterility” Finasteride can reduce fertility in some men, but stopping it increases sperm count.
49 citations
,
August 1996 in “The Journal of Clinical Endocrinology and Metabolism” The combination of cyproterone acetate and testosterone enanthate is highly effective in preventing sperm production and could be a good reversible male contraceptive.
47 citations
,
January 2021 in “Fertility and Sterility” COVID-19 might affect male fertility, but more research is needed to understand the full impact.
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.
42 citations
,
February 1996 in “Journal of Investigative Dermatology” Polyamines, especially spermidine, are essential for hair growth.
40 citations
,
January 1973 in “Journal of Dairy Science” Zinc deficiency in male goats leads to poor hair growth, smaller testicles, reduced libido, and is hard to reverse.
39 citations
,
January 2019 in “The World Journal of Men's Health” Testosterone replacement therapy can prevent men from fathering children and should not be used by those wanting to stay fertile.