25 citations
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September 2005 in “International Journal of Developmental Neuroscience” Morphine increases testosterone breakdown in the rat brain and spinal cord.
54 citations
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July 2002 in “Clinical and Experimental Dermatology” DHT, a testosterone byproduct, causes male pattern baldness.
23 citations
,
July 1979 in “Canadian journal of biochemistry” Spironolactone reduces the number of androgen receptor sites in rat skin by blocking them with its metabolite.
177 citations
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June 1991 in “The Journal of Clinical Endocrinology & Metabolism” Caucasian men have more chest hair and higher levels of certain androgen products than Chinese men.
January 2004 in “Online Publication Service of Würzburg University (Würzburg University)” Women with PCOS have higher 5alpha-reductase activity, affecting steroid levels.
9 citations
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January 2009 in “PubMed” Finasteride treatment can decrease certain steroids and increase others, possibly leading to depression symptoms in some cases.
18 citations
,
March 2020 in “Frontiers in Neuroendocrinology” The enzymes 5α-reductase and 3α/β-hydroxysteroid oxidoreductase help create brain-active substances from progesterone and testosterone, which could be used for treatment, but more research is needed to ensure their safety and effectiveness.
March 2025 in “Journal of Endocrinology and Metabolism” Rodent models of PCOS show some hormone changes similar to humans, but also have key differences.
31 citations
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January 2017 in “Advances in Experimental Medicine and Biology” Low testosterone and 5α-reductase inhibitors can harm men's metabolic and sexual health; testosterone therapy may help, but discussing 5α-RIs' side effects is important.
2 citations
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March 2012 in “Nature Reviews Endocrinology” The body's change of testosterone into DHT is not necessary for testosterone's muscle and sexual effects.
14 citations
,
February 2018 in “Psychoneuroendocrinology” Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.
23 citations
,
March 2014 in “International Journal of Molecular Sciences” Testosterone reduces knee flexibility by affecting relaxin receptors.
13 citations
,
November 2012 in “PubMed” 5α-reductase inhibitors may worsen sexual drive and spontaneous erections but don't worsen existing erectile or ejaculatory problems.
59 citations
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September 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces scalp DHT levels, potentially treating male pattern baldness.
21 citations
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April 2011 in “Physiological Research” Normal levels of DHT can reduce belly fat and increase muscle, but too much can lead to hair loss, prostate issues, and possibly heart disease.
25 citations
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November 2015 in “Journal of Ethnopharmacology” Certain Chinese herbs, especially Cacumen platycladi, can promote hair regrowth and reduce hair loss-related hormone levels in mice.
9 citations
,
August 2000 in “Journal of Periodontal Research” Finasteride reduces testosterone conversion, progesterone lessens this, and levamisole enhances finasteride's effect.
22 citations
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September 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces dihydrotestosterone, increases testosterone, and may treat hirsutism in women.
6 citations
,
September 2012 in “Clinical Interventions in Aging” Honokiol might help reduce male skin aging by maintaining testosterone levels.
3 citations
,
July 2021 in “Drug Testing and Analysis” 5α-reductase inhibitors can interfere with doping tests by masking banned substances.
13 citations
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October 2002 in “Journal of Biochemical and Biophysical Methods” Men with male-pattern baldness have higher levels of certain testosterone metabolites and may have more active androgen metabolism.
37 citations
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January 2015 in “Evidence-based Complementary and Alternative Medicine” An extract from Quercus acutissima bark was found to reduce sebum production and block an enzyme linked to acne.
11 citations
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August 2014 in “Current Urology Reports” Medications for enlarged prostate can cause sexual side effects like reduced libido, erectile dysfunction, and ejaculatory problems.
34 citations
,
February 1993 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.
August 2023 in “Malaysian Journal of Medicine and Health Sciences/Malaysian journal of medicine and health sciences” Pueraria mirifica extract may help treat benign prostatic hyperplasia.
43 citations
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August 2016 in “Scientific Reports” Cinnamomi cortex may help treat prostate enlargement by reducing related proteins.
48 citations
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February 2006 in “Molecular and Cellular Endocrinology” 5α-reductase inhibitors may reduce male fertility and could be used for male contraception.
28 citations
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May 1986 in “Clinics in endocrinology and metabolism” New compounds may soon be tested to treat excessive hair growth in women.
46 citations
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September 2011 in “Journal of Endocrinology” Natural 5α-reduced glucocorticoids might be anti-inflammatory with fewer side effects than current options.
1 citations
,
January 2018 in “AUSTRALIAN JOURNAL OF BASIC AND APPLIED SCIENCES” Zapoteca portoricensis extract may help protect against prostate issues and support liver and kidney health in rats.