This review reports that 5-alpha reductase inhibitors, used to treat androgenic alopecia, may adversely affect sperm count, sexual function, and hormones in a subset of patients.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This source describes alopecia as a hair loss condition often driven by genetic and androgenic factors, with lifestyle elements like chemical treatments exacerbating the issue; Ayurvedic texts caution against scalp toxins and suggest traditional formulations for support.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study discusses the impact of alopecia on individuals' appearance and psychological well-being, highlighting how factors like genetics and lifestyle influence hair loss, and explores traditional Ayurvedic approaches for managing and promoting hair regrowth.
January 2026 in “Journal of the American Academy of Dermatology” 5-alpha reductase inhibitors do not increase osteoporosis risk in women with certain hair loss conditions.
July 2025 in “International Journal of Biological Macromolecules” This study developed a bifunctional sodium hyaluronate microneedle patch incorporating glycyrrhizin-loaded dutasteride micelles and mesoporous polydopamine nanoparticles, which effectively inhibited DHT and reduced ROS in hair follicle cells, resulting in significantly accelerated hair growth in vitro and in vivo.
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.
July 2025 in “Saudi Journal of Medicine and Public Health” In this review, 5α-reductase inhibitors like finasteride and dutasteride were found to significantly reduce prostate volume and stabilize hair loss, but they also carry risks of sexual dysfunction, necessitating careful patient evaluation and monitoring.
January 2024 in “Brazilian Journal of Hair Health” This integrative literature review suggests that phytotherapeutic products, like Saw palmetto and Green tea, could serve as viable alternatives to current medications like finasteride for treating androgenetic alopecia, potentially offering fewer side effects.
November 2023 in “ACS Omega” This study reported that a novel cationic liposome formulation for delivering encapsulated Cas9 protein and sgRNA successfully decreased SRD5α2 mRNA expression by 29.7% in vitro, suggesting a potential alternative treatment option for conditions like prostate cancer and benign prostatic hyperplasia without current drug side effects.
November 2023 in “Expert Opinion on Pharmacotherapy” This abstract does not provide any specific results or findings but describes male androgenic alopecia as a progressive and psychologically distressing hair-loss disorder involving hair follicle miniaturization.
October 2023 in “Annales Academiae Medicae Silesiensis” In this paper, the authors detailed the role of 5-α-reductase in male androgenetic alopecia and discussed potential inhibitors like saw palmetto extracts, suggesting further investigation into their effects on hair follicles and associated biological processes.
October 2023 in “Journal of the Endocrine Society” This case report describes a unique instance where elevated prolactin levels from a pituitary adenoma were associated with hirsutism due to increased dihydrotestosterone, with treatment leading to normalization.
March 2023 in “Translational Andrology and Urology” This review discusses the pharmacology of 5-alpha reductase inhibitors, their expanding clinical indications beyond benign prostatic hyperplasia, and notes unresolved claims about their potential role in SARS-CoV-2.
April 2022 in “Molecules” This study identified two potent 5α-reductase inhibitors from Tectona grandis leaves, and suggests that ethanol is a preferable solvent for extracting these compounds, which are potential ingredients for hair loss treatments.
February 2020 in “Definitions” This study found that finasteride treatment may decrease contraction of seminal vesicle tissue and alter some semen parameters in male rabbits.
December 2018 in “Actas urológicas españolas” This study reported that cognitive biopsy diagnosed prostate cancer in 44% of patients with at least one previous negative biopsy, with higher detection rates in lesions classified as PI-RADS 4 and 5.
January 2018 in “Surgical and Cosmetic Dermatology” This review provides an in-depth examination of the efficacy and safety of finasteride and dutasteride, commonly used for treating benign prostatic hyperplasia and male androgenetic alopecia.
January 2018 in “Elsevier eBooks” This review discusses the role of DHT in male sexual differentiation and fertility in individuals with 5α-reductase-2 deficiency, reporting no new clinical results.
March 2016 in “The Journal of Urology” This historical review traces the discovery of 5-alpha reductase inhibitors, widely used in urology, from the study of guevedoces, Dominican children with a rare disorder leading to significant androgenization at puberty.
January 2011 in “Medical Recapitulate” This article reviews the role of 5α-reductase in androgen-related diseases like acne and androgenetic alopecia and reports no new clinical results, emphasizing the importance of studying the enzyme.
This article discusses the complexities of diagnosing hyperandrogenism in women and reviews potential treatments, such as antiandrogens and finasteride, but reports no new clinical findings.
February 1996 in “Clinical Pharmacology & Therapeutics” MK-386 reduces sebum DHT levels.
January 2014 in “프로그램북(구 초록집)” This article reviews updates on 5 alpha-reductase inhibitors for treating male pattern hair loss and presents no new clinical findings; the author aims to enhance understanding of these therapies.
72 citations
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April 2008 in “The Journal of urology/The journal of urology” This study found that 1-year use of 5alpha-reductase inhibitors, dutasteride or finasteride, significantly lowered dihydrotestosterone levels without adversely affecting bone density, lipids, or hemoglobin in normal men.
17 citations
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August 2011 in “Current Medicinal Chemistry” This review summarizes recent advancements in steroidal 5α-reductase inhibitors for benign prostatic hyperplasia and reports no new clinical results.
11 citations
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December 2018 in “Assay and Drug Development Technologies” This review highlights the challenges in screening for steroid 5 alpha-reductase inhibitors and discusses significant variability in the effectiveness of finasteride and dutasteride, calling for standardized testing methods to develop safer, more specific inhibitors from herbal preparations.
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.
August 2024 in “Biomedical Journal of Scientific & Technical Research” This review discusses the role of steroid 5 alpha reductase 2 in converting testosterone to DHT and its association with conditions like benign prostatic hyperplasia and prostate cancer; it reports no new results.
35 citations
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March 2013 in “American Journal of Medical Genetics Part B Neuropsychiatric Genetics” This study found that a genetic variation in SRD5A2 influences the severity of PTSD symptoms in a sex-specific manner among traumatized African-American males.