14 citations
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January 2019 in “Journal of Natural Medicines” This study found that certain compounds from Chaga mushrooms stimulated the proliferation of human hair follicle cells more effectively than minoxidil, suggesting potential for hair-growth treatments.
7 citations
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August 2006 in “Maturitas” This study found that black cohosh extract BNO 1055 reduced testosterone-induced prostate and seminal vesicle growth in rats, suggesting it may contain potent 5α-reductase inhibitors useful for prostate cancer prevention.
6 citations
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July 2024 in “Heliyon” This study examined the evolutionary and functional homology of steroid 5α-reductase and DET2 proteins, identifying protists as a common ancestor, and discovered a new subclass DET2-like in plants, potentially involved in polyprenol reduction.
This review found that 5α-reductase inhibitors (such as finasteride and dutasteride) effectively reduce prostate size and stabilize hair loss but are associated with sexual dysfunction; they remain essential treatments for BPH and androgenic alopecia, requiring tailored risk-benefit assessments.
June 2023 in “Journal of personalized medicine” This study found that dihydrotestosterone treatment may be more beneficial for height in children with 5-α-reductase type 2 deficiency compared to testosterone enanthate, especially in the prepubertal period.
September 2023 in “Middle East Fertility Society Journal” This study found that nicotine may have a therapeutic role in mitigating the exacerbation of infertility conditions connected with alpha-synuclein-related Parkinson’s disease through molecular interactions identified via pathway analysis.
92 citations
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October 2002 in “Journal of The American Academy of Dermatology” This study reports that oral finasteride improved or stabilized hair loss in women with hyperandrogenism but not in postmenopausal women with female pattern hair loss.
1 citations
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November 1999 in “Hautarzt” Finasteride is not expected to be effective for treating Acne vulgaris.
December 2022 in “Scientific Reports” This study found that caffeic acid amide derivative, compound 4, effectively inhibited steroid 5α-reductase type 1 in vitro, suggesting potential for development as a treatment for androgenic alopecia.
48 citations
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February 2006 in “Molecular and Cellular Endocrinology” This study found that dual 5α-reductase inhibitors in rats decreased sperm quality and led to reduced pregnancy success, suggesting potential for use in male contraception.
17 citations
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November 1997 in “Andrology” Finasteride effectively treats enlarged prostate and male baldness, improves symptoms of hirsutism in women, but doesn't work for acne, and may delay prostate cancer progression with few side effects.
2 citations
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January 2023 in “Uro” This study found that both a proprietary ultrahigh-pressure extract and a hexanic extract of saw palmetto showed comparable inhibition of 5α-reductase, suggesting similar potential for managing symptoms of benign prostatic hyperplasia.
This review analyzed clinical trials and guidelines on 5-α-reductase inhibitors (5-ARIs) and found these drugs significantly improve urinary symptoms in BPH and stabilize hair loss in androgenic alopecia, but may cause sexual dysfunction and gynecomastia.
September 2022 in “Annals of medicine and surgery” This case report discusses the diagnostic challenges and management options for three siblings with 46, XY DSD due to type 2 5-α reductase deficiency, highlighting the genetic basis and impact on their quality of life.
January 2019 in “Dermatologica Sinica” This study observed that dutasteride treatment led to improvement in acne vulgaris among two male patients with androgenetic alopecia, suggesting its potential as a treatment option for concurrent conditions.
32 citations
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April 1999 in “Expert Opinion on Investigational Drugs” Clinical studies reported that finasteride reduces scalp dihydrotestosterone levels and improves hair growth in men with androgenetic alopecia, supporting its role as a treatment option.
4 citations
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September 2006 in “European Urology Supplements” Dutasteride reduces DHT and improves BPH symptoms more effectively than finasteride.
5 citations
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February 1997 in “Bioorganic & Medicinal Chemistry” This study found that among 17 beta-(N-ureylene-N,N'-disubstituted)-4-azasteroids, those with an N'-phenyl moiety were the most effective inhibitors of human type I 5 alpha-reductase.
23 citations
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September 2020 in “BMC Cancer” This retrospective cohort study found that patients using 5α-reductase inhibitors had reduced bladder cancer-related mortality compared to nonusers, with no significant effect on bladder cancer recurrence or upper tract urothelial carcinoma mortality.
April 2023 in “European urology open science” This study reviews the psychological side effects of finasteride, noting a potential association between 5-AR inhibitors and increased depressive symptoms, but emphasizes that the causal link to suicidal ideation remains unclear; the authors recommend mental health screenings and close monitoring for patients starting this medication.
This study found that Avicennia marina extract significantly increased hair growth in androgenic alopecia patients, suggesting its potential effectiveness by inhibiting 5 alpha-reductase and regulating relevant growth factors.
This study found that the methanolic heartwood extract of Avicennia marina significantly inhibited the enzyme 5 alpha-reductase type 1 in a cell-based assay, suggesting potential anti-androgenic effects for treating androgenic alopecia.
May 2023 in “Blood cancer discovery” This study found that Finasteride significantly reduced the proliferation of acute myeloid leukemia cell lines by inhibiting androgen receptor activity.
April 2012 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Early hair loss in men could be a sign of non-cancerous prostate enlargement, and treating hair loss early might help prevent prostate issues later.
3 citations
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September 2016 in “Clinical, cosmetic and investigational dermatology” This study found that sphinganine may improve scalp health, hair quality, and reduce hair loss in males, potentially due to increased antimicrobial peptide levels and inhibition of 5-α-reductase.
February 2026 in “Archiv Euromedica” In this narrative review, researchers reported that oral finasteride significantly improved hair count and density in male androgenetic alopecia but had higher systemic exposure and potential side effects compared to topical formulations, which provided similar efficacy with lower systemic DHT suppression.
February 2026 in “Journal of Cosmetic Dermatology” This study found that a proprietary saw palmetto extract significantly improved hair growth in men and women with self-perceived thinning hair over a 6-month period, outperforming placebo on key hair growth parameters without any treatment-related adverse events.
February 2026 in “Journal of Drugs in Dermatology” In this series, patients experienced alopecia with limited regrowth following mesotherapy, indicating possible lasting aesthetic consequences and suggesting the need for careful technique and close follow-up, as the condition might be underrecognized.
December 2025 in “The AAPS Journal” Finasteride and dutasteride's effects are mainly due to target binding saturation and slow enzyme turnover.
January 2025 in “Faculty of 1000 Research Ltd” Plant-based treatments may help reduce BPH symptoms, but more research is needed.