23 citations
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October 2015 in “Andrology” New male hormonal contraceptives show promise but need more research on long-term effects and funding for larger trials.
23 citations
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January 2007 in “Archives of Andrology” Finasteride may negatively affect male fertility.
17 citations
,
May 2021 in “Journal of Assisted Reproduction and Genetics” COVID-19 may harm male fertility and damage the reproductive system.
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.
13 citations
,
June 2018 in “Current Urology Reports” Hair loss drugs may cause sexual issues and infertility in men.
4 citations
,
January 2023 in “Andrology” The testes produce sperm and hormones essential for male development.
3 citations
,
November 2021 in “IntechOpen eBooks” The testes produce important hormones like testosterone and others that play key roles in male body functions.
3 citations
,
February 2018 in “Human Reproduction” A man with testotoxicosis was fertile despite low FSH levels, suggesting high testosterone may allow sperm production without FSH.
3 citations
,
February 2017 in “Archives of Medical Science” Finasteride treatment changes Cx43 in rat testes, possibly causing fertility issues.
2 citations
,
January 2015 in “Springer eBooks” Environmental factors and exposure to toxins may contribute to male infertility by affecting sperm and hormone function.
1 citations
,
February 2024 in “Pharmacognosy Journal” Fenugreek seed extract boosts testosterone and improves male reproductive health without heart side effects.
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.
June 2024 in “Georgetown medical review” Finasteride treats hair loss but may cause low libido, erectile issues, and depression.
Finasteride improves hair but may reduce sperm quality at higher doses.
May 2025 in “Veterinary Medicine and Science” Melatonin improved reproductive function in male Pomeranian dogs with Alopecia X, but more research is needed.
Stem cells regenerate tissues and their behavior varies by environment, suggesting the hematopoietic system model may need revision.
June 2021 in “Archives of Advances in Biosciences” Finasteride reduces sperm count and quality and alters hormone levels in mice.
79 citations
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December 1990 in “Clinical endocrinology” The testes control steroid production through complex interactions involving various cells and signaling molecules.
70 citations
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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
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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.
49 citations
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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.
40 citations
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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.
34 citations
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January 2004 in “Revista do Hospital das Clínicas” Finasteride may worsen infertility in men with existing issues, but stopping it can improve sperm health.
34 citations
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January 2004 in “PubMed” DHT deficiency in rats reduces sperm content and affects testis structure over time.
26 citations
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March 2001 in “PubMed” Men's fertility and sexual health decline with age, with reduced testosterone and virility, and many lose fertility by their eighties.
18 citations
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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.
17 citations
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December 2014 in “Cell Stem Cell” Intravital imaging helps us better understand stem cells in their natural environment and could improve knowledge of organ regeneration and cancer development.
17 citations
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January 2013 in “Our Dermatology Online” Dutasteride mesotherapy helps treat male hair loss but may harm sperm and sexual function.
10 citations
,
September 2015 in “Folia Histochemica Et Cytobiologica” Finasteride treatment in male rats can reduce fertility and affect sperm development in their offspring.
8 citations
,
July 2017 in “The Journal of Steroid Biochemistry and Molecular Biology” DHT affects testicular development and regulates spermatogenesis in some fish.