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This article discusses the potential effects of exogenous testosterone, highlighting that its impact on prostate cancer progression, cardiovascular health, and behavior remains uncertain and needs further investigation.

This article reviews the coordination of the hypothalamic-pituitary-gonadal axis, male fertility, and therapies for hypogonadism, but reports no new clinical findings.

This study found that untreated men with coeliac disease exhibited androgen resistance, potentially linked to sexual dysfunction, which improved as intestinal health improved, a pattern not observed in other chronic illnesses.

Hormonal treatment in transgender women reduces semen quality, but stopping treatment may improve it.

This study describes a family with X-linked gynecomastia and undervirilization in men, finding a subtle androgen receptor abnormality that may not always lead to infertility despite androgen resistance.

This study found that discontinuing finasteride led to a significant increase in sperm counts for most men with reduced fertility, though hormone levels and other semen parameters remained unchanged.

This study found that combining cyproterone acetate with testosterone enanthate was highly effective in suppressing spermatogenesis, suggesting potential as a reversible male contraceptive method.

This review assesses the current literature on COVID-19's effects on male sexual and reproductive health, highlighting significant research gaps and providing guidance for patient counseling.

In this study, the authors concluded that COVID-19 may not cause direct long-term harm to testicular function, but temporary indirect effects could occur, suggesting a possible delay in pursuing parenthood post-recovery.

This study found that spermidine, a polyamine, plays an essential role in hair growth in sheep follicles, while spermine is not required for normal follicle function.

This study found that zinc deficiency in goats led to lower plasma zinc levels, decreased growth rate, smaller testicles, reduced libido, and was associated with higher mortality compared to control goats.

Testosterone replacement therapy can prevent men from fathering children and should not be used by those wanting to stay fertile.

In this case report, a male patient's semen parameters improved after discontinuing a 1-mg dose of finasteride, suggesting that stopping the medication may benefit infertile men with previous sperm production issues.

This review discusses the clinical use of anti-androgen medications and highlights emerging evidence supporting plant-derived anti-androgens like spearmint tea for managing PCOS, but reports no new clinical results.

The authors reported that young men with infertility-related conditions experienced improved seminal quality after stopping finasteride, suggesting potential adverse effects on fertility during treatment.

In this study, finasteride treatment for 56 days in adult rats led to sloughing of immature germinal cells and reduced sperm content in the epididymis, indicating its importance for maintaining spermatogenesis.

This review discusses the potential persistent adverse effects associated with 5α reductase inhibitor treatment for androgenetic alopecia but provides no new clinical results; it emphasizes the importance of discussing these risks with patients.

This article reviews the role of polyamines in hair follicle growth and discusses potential therapeutic applications but provides no new clinical results.

This article reviews the effect of aging on male hormone levels and fertility, highlighting the need for more research on the benefits and risks of androgen supplementation in older men.

This review discusses the physiological basis, history, and current development of male hormonal contraception, highlighting its potential risks and benefits, but reports no new research findings.

This review examines the negative effects of anabolic-androgenic steroid use on the male reproductive system, including impaired testosterone production, sperm production issues, and adverse metabolic consequences without reporting new clinical results.

This article discusses concerns and recommendations from a French-speaking andrology society regarding COVID-19's potential impact on men's reproductive health and calls for further research in this area.

This review indicates that many former FDA category D and X systemic dermatologic medications may negatively impact male fertility, with further research needed to assess potential teratogenic effects.

This study reviews the mechanisms by which SARS-CoV-2 may impact male fertility, noting potential disruptions in spermatogenesis and hormone secretion, and underscores the need for follow-up in recovered men.

This study concluded that mesotherapy with a dutasteride-containing solution was the most effective option for treating androgenetic alopecia in males, promoting hair growth and reducing hair loss.

This discussion explores advances in intravital imaging for visualizing stem cells, highlighting key discoveries and potential future developments; it reports no new experimental results.

This study found that older age at puberty may be associated with lower semen quality and altered reproductive hormone levels in young men, though only some results were statistically significant.

This review discusses the effects of 5ARI drugs on male reproductive parameters, reporting potential decreases in sperm count and motility more significantly in men with pre-existing oligozoospermia, but does not provide fertility outcomes.

This case report describes a 40-year-old man whose secondary infertility, observed after prolonged finasteride use for hair loss, resolved following discontinuation of the drug, resulting in a live birth.

This review discusses the evaluation of hyperandrogenemia in women and hypogonadism in men across different life stages and presents biomarkers used for diagnosing male hypogonadism, reporting no new clinical results.