3 citations
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July 2021 in “Drug Testing and Analysis” 5α-reductase inhibitors can interfere with doping tests by masking banned substances.
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.
17 citations
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October 2003 in “Brazilian Journal of Medical and Biological Research” The gene SDR5A1 is found in scalp hair of both hirsute and normal individuals, but it does not explain differences in hair growth.
June 2023 in “International journal of pharmaceutical quality assurance” Eclipta alba extract could be a promising natural treatment for hair loss.
122 citations
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July 1990 in “Teratology” Finasteride exposure in pregnancy causes genital abnormalities in male rats.
5 citations
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August 2018 in “Sexual Medicine Reviews” 5α-Reductase inhibitors do not consistently increase testosterone levels in the blood.
22 citations
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November 2018 in “Breast Cancer Research and Treatment” The medications 5α-reductase inhibitors and spironolactone are generally safe for breast cancer patients on endocrine therapies and do not significantly increase breast cancer risk.
9 citations
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March 1991 in “Endocrinology” Using two drugs together, Flutamide and 4-MA, is more effective for blocking male hormones than using each one alone.
4 citations
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September 2010 in “Medical Hypotheses”
December 2025 in “Cureus” Using 5α-reductase inhibitors for hair loss may increase the risk of dry eye disease.
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.
47 citations
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April 2003 in “Journal of dermatological science” Thujae occidentalis semen extract may help treat male pattern baldness by blocking a hair loss-related enzyme and reducing hair loss in mice.
30 citations
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August 1992 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride doesn't affect hormone levels in normal men.
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November 2006 in “International Journal of Cancer” A49T gene variant linked to higher prostate cancer risk, lower hormone levels, and slightly reduced balding risk.
39 citations
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April 2018 in “Hormones” No consistent link between genotype and phenotype in 5-α-Reductase type 2 deficiency.
2 citations
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January 2025 in “Frontiers in Pharmacology” Purple corn extract may help reduce prostate enlargement and inflammation.
43 citations
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August 2016 in “Scientific Reports” Cinnamomi cortex may help treat prostate enlargement by reducing related proteins.
4 citations
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July 2015 in “Veterinary Dermatology” Two types of 5α-reductase are in dog skin, which might make dutasteride better than finasteride for treating dog hair loss.
147 citations
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April 1990 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride safely lowers DHT levels without affecting testosterone.
73 citations
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January 1994 in “European Urology” Finasteride works better than Permixon in reducing dihydrotestosterone levels.
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December 2011 in “Journal of Ethnopharmacology” Some Thai plants, especially Carthamus tinctorius, could help prevent hair loss and promote hair growth without adverse effects.
71 citations
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November 2012 in “Expert Opinion on Drug Safety” 5-alpha reductase inhibitors can cause sexual side effects like erectile dysfunction and reduced sexual desire, sometimes lasting after stopping the drug.
20 citations
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March 2017 in “Reproductive Biology and Endocrinology” Women with PCOS have higher 5α-reductase activity, which may be linked to insulin resistance.
4 citations
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January 2016 in “Journal of analytical & bioanalytical techniques” The herbal hair gel could be a safe hair growth treatment with minimal side effects.
17 citations
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December 2018 in “The World Journal of Men s Health” Long-term use of dutasteride can cause permanent erectile dysfunction in rats.
7 citations
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January 2018 in “Reproduction” Inhibiting 5α-reductase increases progesterone levels in late pregnant mares.
November 2025 in “Frontiers in Pharmacology” Xiaozhi Yufa decoction may help treat hair loss by improving hair growth and reducing inflammation.
11 citations
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January 2017 in “Journal of Endocrinology/Journal of endocrinology” Female mice with disrupted 5α-reductase 1 had significant metabolic issues, including stress response problems, insulin resistance, liver fat buildup, and obesity.
66 citations
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April 2017 in “International Journal of Andrology” Men taking 5α-reductase inhibitors for enlarged prostate have a higher chance of experiencing reduced sexual desire and erectile dysfunction.
38 citations
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October 2014 in “Current Opinion in Endocrinology, Diabetes and Obesity” 5-alpha reductase deficiency leads to male sexual development issues and treatments like finasteride help with prostate enlargement and hair loss.