September 2025 in “Toxicology” Long-term use of finasteride and minoxidil may harm male reproductive health in mice.
November 2022 in “Journal of the Endocrine Society” A 21-year-old male with a rare genetic disorder experienced sudden hair loss and high DHEAS levels, likely due to a condition similar to PCOS, usually seen in women.
Finasteride significantly reduced sperm production and caused testicular atrophy in hamsters.
April 2026 in “Al-Kufa University Journal for Biology” Finasteride lowers cortisol and raises testosterone levels in rats.
10 citations
,
October 2010 in “International Journal of Andrology” Finasteride doesn't affect oral testosterone undecanoate, and high DHT levels may cause acne, prostate issues, and hair loss.
28 citations
,
November 2017 in “Molecular and cellular endocrinology” Testosterone and its byproducts help support male sexual behavior through different pathways in the brain and body.
25 citations
,
June 2017 in “Scientific reports” Stress worsens Tourette symptoms by increasing allopregnanolone levels.
January 2014 in “edoc (University of Basel)” Anabolic steroids and inflammation can disrupt androgen metabolism, potentially causing health issues.
7 citations
,
April 1992 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” Women with non-classical congenital adrenal hyperplasia have higher levels of certain steroids, which can be reduced by treatment.
11 citations
,
April 2020 in “Andrology” Testosterone replacement therapy, especially intramuscular, raises PSA levels, but no overall link between PSA and testosterone was found except in non-BPH patients.
September 2017 in “Journal of Investigative Dermatology Symposium Proceedings” Prostaglandin D2 increases testosterone production in skin cells through a process involving reactive oxygen species, which could be a new target for treating hair loss and other skin conditions driven by testosterone.
8 citations
,
May 1982 in “Journal of Endocrinology/Journal of endocrinology” Rat skin takes up and processes testosterone differently than other organs, with testosterone being more important for the skin than its metabolite 5α-DHT.
3 citations
,
February 2025 in “Endocrine” Confirm testosterone levels with advanced tests to avoid unnecessary procedures.
13 citations
,
January 2020 in “Neuroscience” Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.
2 citations
,
June 2018 in “Physiology & behavior” Early changes in brain chemicals affect how a drug reduces alcohol intake in rats.
August 2020 in “DOAJ (DOAJ: Directory of Open Access Journals)” Finasteride, at doses of 5mg or higher, may negatively affect male fertility by reducing the expression of certain genes involved in sperm production.
42 citations
,
May 2007 in “Endocrinology and metabolism/American journal of physiology: endocrinology and metabolism” Testosterone can build muscle and bone without enlarging the prostate when a specific enzyme is blocked.
April 2020 in “Journal of the Endocrine Society” Male pattern baldness may indicate arterial stiffness in transgender men on long-term testosterone therapy.
12 citations
,
January 2020 in “touchREVIEWS in Endocrinology” Testosterone may both worsen and protect against COVID-19 effects in men.
37 citations
,
January 2009 in “Sexual Development” Fadrozole and Finasteride change frog sex ratios and cause intersex animals with altered gene expressions.
46 citations
,
August 2006 in “PubMed” A genetic defect causes males in some Mediterranean populations to be born with ambiguous genitalia and develop male traits at puberty.
4 citations
,
October 2000 in “Contraception” The right dosage of CPA and TB can work as a safe and reversible male contraceptive in monkeys.
1 citations
,
June 2023 in “Acta veterinaria” Maternal hypothyroidism harms skin development in rat offspring.
May 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Testosterone significantly affects urination differences between male and female mice.
January 2018 in “Elsevier eBooks” The document explains how male reproductive hormones work and affect the body.
8 citations
,
July 2017 in “The Journal of Steroid Biochemistry and Molecular Biology” DHT affects testicular development and regulates spermatogenesis in some fish.
1 citations
,
June 2024 in “Revista Colombiana de Endocrinología Diabetes & Metabolismo” The risks of testosterone implants in women outweigh the benefits.
30 citations
,
March 1980 in “European Journal of Endocrinology” Adrenal androgens are important for puberty and are influenced by genetics.
July 2007 in “Journal of Reproduction & Infertility” Short-term finasteride use likely doesn't harm male fertility.
47 citations
,
January 2001 in “Journal of Investigative Dermatology” High testosterone to epitestosterone ratio in hair could predict male-pattern baldness.