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This narrative review highlights that declining testosterone levels are a complex public health issue potentially influenced by modifiable lifestyle factors and environmental stressors, suggesting integrated strategies may be needed to address the trend's impacts on health.

This review explores the mechanisms, current products, challenges, and innovative approaches related to cosmetics for hair loss prevention and growth promotion, emphasizing the need for multidisciplinary cooperation to enhance product development and market success.

This study found that among Portuguese women with hirsutism, polycystic ovary syndrome was the most prevalent cause, associated with distinct hormonal features and higher BMI compared to controls.

This book chapter reviews the genetic and epigenetic factors influencing PCOS, particularly in a global context and specific to India, and reports no new clinical findings.

This article reviews neuroendocrine abnormalities in polycystic ovarian syndrome and reports no new findings, highlighting areas such as the hypothalamus-pituitary axis and genetic basis.

This review discusses the current status of genetic research on male-pattern hair loss and reports no new findings, outlining significant achievements and future challenges in understanding its biology and treatment.

This systematic review concluded that 5 mg of oral finasteride per day could be an effective and safe treatment for female pattern hair loss in normoandrogenic women, particularly when combined with other medications.

Hormonal interactions, especially involving DHT and estrogen, play a key role in BPH development and treatment.

This study found that prostate size varies significantly among different ethnic groups in South-Kivu, with the Lega having larger prostate volumes compared to other groups.

This review discusses the production, role, and measurement of dihydrotestosterone (DHT) in various disorders of sexual development but does not report new clinical results.

In this study, exosome-mimetic nanovesicles derived from neural progenitor cells promoted hair follicle regeneration in mice by activating the Wnt/β-catenin signaling pathway.

This review discusses advanced biomedical technologies, such as nanotechnology and stem cell-based approaches, for treating androgenetic alopecia, detailing their benefits, current applications, and challenges, without reporting new experimental results.

This review examines the effects of sex hormones on hair growth and the pathogenesis of related hair disorders, highlighting current management benefits and controversies but reporting no new results.

This review discusses the complex effects of testosterone on the brain, emphasizing sex differences, and reports no clinical results; the authors highlight the inconsistencies in current study findings.

This review discusses factors contributing to COVID-19 severity disparities, highlighting age, comorbidities, race/ethnicity, and gender, and reports no new clinical findings; it emphasizes understanding these mechanisms to address risk differences.

This review highlights how social, environmental, and biological factors combine to increase COVID-19 risks in the African American community, emphasizing the need to understand these complex disparities; it reports no new results.

This article discusses the role of sex hormones in COVID-19 fatality differences between sexes and reports no new clinical results, suggesting that future strategies should consider sex-specific approaches.

This study found no significant association between genetic loci linked to male androgenetic alopecia and female-pattern hair loss in a Chinese Han population, suggesting they are etiologically separate disorders.

In this study, a computational analysis of promoter regions in human fertility-related genes identified several new candidate regulatory motifs, but these require further experimental validation due to the limitations of being an in silico examination.

This study conducted a meta-analysis and found that men with both frontal and vertex male pattern baldness have a slightly increased risk of developing prostate cancer, though most data was from Caucasian populations and effect modification by genetic variations was not assessed.

This article involves an interview with dermatologist Rodney Sinclair and provides no new research findings.

This review highlights the mixed roles of testosterone in COVID-19, noting both potential benefits through anti-inflammatory effects and risks due to increased virus entry, with low testosterone linked to increased severity.

This review discusses the complex genetic factors contributing to androgenetic alopecia, highlighting the variability in genetic risk across different populations and the emerging understanding of personalized treatment strategies, but reports no new clinical findings.

This review discusses advances in molecular biology and genetics related to androgenetic alopecia and reports no new clinical results.

This case report identifies a novel maternally inherited MBTPS2 variant associated with an expanded phenotypic spectrum of BRESHECK syndrome, including cytopenias, bone marrow fibrosis, and chronic diarrhea.

This study reviewed early research on topical finasteride for androgenetic alopecia, finding it appears safe and promising, though further investigation is needed to determine optimal dosing, frequency, and potential applications for other types of alopecia.