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This narrative review summarizes evidence on NAD⁺ biosynthesis and turnover, highlighting that while NAD⁺ precursors like NR and NMN consistently boost NAD⁺ levels in preclinical and human studies, clinical outcome results remain varied, indicating a need for more standardized human trials.

This study found that a mild intramuscular dose of BOTOX increased spermatogenesis and improved sperm quality in ageing mice, suggesting potential benefits for managing male infertility.

This review summarizes the roles of matricellular proteins in skin stem cell niches, highlighting their contribution to stem cell fate, self-renewal, and potential implications for wound healing and aging.

This review discusses the role of lamins in development, tissue maintenance, and stress response, and does not report new experimental findings.

This review explores the novel roles of white adipose tissue in tissue homeostasis and regeneration, emphasizing its impact on epithelial, muscle, and immune tissues, and reports no new clinical results.

This review found that lip aging differs significantly from facial aging and suggests focusing on distinct anti-aging strategies for lips, considering gender differences and unique physiological characteristics.

This article reviews the role of androgens in male pattern hair loss and its emotional impact, but reports no new clinical findings.

This study evaluated the effectiveness of functional tests and manual muscle testing in qualitatively assessing muscle performance in children with health abnormalities.

This study describes the case of a 22-year-old female with alopecia areata linked to vitamin D deficiency, highlighting the importance of early diagnosis and management of deficiency to prevent broader health issues.

This review found that glucocorticoid corticosteroids can improve muscle strength and function in boys with Duchenne muscular dystrophy in the short term, but they are associated with significant short-term adverse effects.

This position statement reviews the role of exercise professionals in managing PCOS and provides recommendations for physical activity, but it reports no new clinical findings.

This review discusses the role of mitochondrial dysfunction in the ageing process and reports that its significance compared to other factors in mammalian ageing remains uncertain.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

This study found that dermal papilla and dermal sheath cells from human scalp tissue differ from interstitial dermal fibroblasts in morphology and produce varying levels of TGF-beta 2.

This review synthesizes current knowledge on eyelash hair follicles, highlighting gaps in understanding their biology and proposing future research directions; it reports no new experimental findings.

This article reviews the roles and mechanisms of stem and progenitor cell migration in adult organs for tissue homeostasis and regenerative medicine, but reports no new experimental results.

This case report describes a child with Gomez–Lopez–Hernandez syndrome, highlighting developmental challenges and medical interventions, yet noting academic success and participation in mainstream activities.

This article reviews the limited evidence on testosterone therapy for premenopausal women and notes a lack of long-term safety and effectiveness data for this population.

This article discusses the need to investigate long-term effects of androgen manipulations independently of current levels, referencing Post-finasteride Syndrome as a relevant clinical example, and reports no new results.

This study suggests that sexual dimorphism in adipose tissue functions may be linked to androgen levels, as women with PCOS demonstrated a more masculine adipokine expression pattern.

This review reports that combining adipose-derived stem cells with decellularized extracellular matrix enhances tissue repair by improving scaffold biological activity and promoting angiogenesis, integration, and functional regeneration across various tissues, while addressing challenges in traditional transplantation methods.

In this study, researchers analyzed spaceflight data from various sources and found that skin issues during spaceflight are linked to DNA damage, mitochondrial dysregulation, and gene alterations, while also highlighting the skin's adaptability post-flight.

This study found that concentrated clusters of noradrenergic nerve fibers form a longitudinal linear system in rat skin, particularly innervating arrector pili muscles.

This review discusses the role of skeletal muscle in synthesizing bioactive androgens, highlighting that intramuscular androgens may influence muscle via intracrine action, but their precise function remains unclear.

This study by Gao et al. reports that two nonsteroidal selective androgen receptor modulators, S1 and S4, demonstrated tissue-selective actions in rats, suppressing prostate growth while maintaining muscle growth without altering hormone levels.

This review discusses various treatments for androgenic alopecia, highlighting FDA-approved options and other commonly used therapies, but reports no new clinical results.

This study found that VDR knockout mice exhibited muscle and motor impairments affecting locomotor behavior, while cognitive functions such as exploration, working memory, and anxiety appeared unaffected.

This review discusses the potential of DHEAS and testosterone treatments to increase muscle mass in older men with sarcopenia, while effects on muscle function and physical performance remain unclear, and calls for further research on optimized approaches.

In this study, transplantation of rat hair follicle stem cells significantly improved sciatic nerve regeneration and muscle function in nerve-injured rats.

This study found that while MK-0773 significantly increased lean body mass in sarcopenic frail elderly women, it did not significantly improve muscle strength or physical function compared to placebo.