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This study found that testosterone therapy improved physical performance, strength, lean body mass, and serum cholesterol in older men with low testosterone levels, with or without the addition of finasteride.

This study proposed a new standardized in vitro framework using human hair tresses to evaluate cosmetic hair product performance and found significant improvements in hair breakage, tensile strength, shine, volume, and frizz control compared to a control group without such changes.

In this study, Tithonia diversifolia extract was found to improve certain digestive parameters in crossbred sheep but did not enhance growth performance, as the improvements in digestion did not translate into increased body weight or feed conversion.

This article discusses the widespread issue of performance-enhancing drug use in sports, its health risks, and the importance of drug testing; it reports no new study findings.

This article discusses the shifting role of physicians in addressing performance-enhancing drug use in sports and highlights that the same benefits may be achieved through dietary and training advice, but it reports no new results.

This article discusses the ethical views of Polish physicians on performance-enhancing substances and emphasizes the need to improve their knowledge to better address related issues in their patients, but it reports no new results.

This review discusses how 5α-reductase inhibitors affect PSA levels in benign prostatic hyperplasia treatment and their role in prostate cancer screening, but reports no new clinical findings.

This study reviews the transformative role of artificial intelligence in biomaterial design, highlighting its ability to reduce costs through virtual screening, enhance material performance, and predict biological interactions to advance personalized and precision medicine.

This study evaluates the compatibility of six active pharmaceutical ingredients, including finasteride and spironolactone, with TrichoFoam™, a foam vehicle used in personalized treatments for alopecia, though it does not report specific results.

The document concludes that there are still unknowns about the effectiveness, risks, and detection of performance-enhancing drugs, and doping remains a challenge.

This article reviews the development of selective androgen receptor modulators and myostatin inhibitors as performance-enhancing drugs, highlighting ongoing challenges in achieving truly tissue-selective anabolic agents and reporting no new experimental findings.

In this study, researchers observed that introducing an Environmental Enrichment Program improved the reproductive and zootechnical performance of Calomys callosus rodents by enhancing reproductive indices, parental care, and overall health, including reduced non-infectious lumbar alopecia.

In this study, researchers found that effective working memory performance in healthy, young adults depends on neural suppression of irrelevant information to prevent overload, rather than just enhancing relevant information.

This study developed a natural hair dye using Coreopsis tinctoria Nutt. extract, finding that it produced yellow to dark brown colors depending on the treatment, with ferrous lactate enhancing dye performance and color stability after washing.

This study found that consumption of dietary supplements and sports nutrition may lead to therapeutic and cosmetic improvements, benefiting skin, hair, and nails while potentially enhancing athletic performance.

This study examined argan oil inclusion complexes with β-CD, finding that these complexes improve the antibacterial efficacy, uniformity, and mechanical performance of hair treatment formulations while enhancing the durability of bleached hair, suggesting their potential as stable and effective cosmetic ingredients.

This review concludes that creatine monohydrate is a safe and effective supplement, offering potential health benefits beyond athletic performance; however, it addresses concerns regarding its use among specific populations and effects on various health aspects.

This review discusses various nanocarriers for gene and genome editing therapies, highlighting that ionizable lipid nanoparticles show advanced delivery performance, while emerging polymer-based and exosome-inspired carriers are rapidly advancing for targeted applications.

This research reports that essential oils may enhance athletic performance by improving cerebral hemodynamics and promoting muscle and psycho-emotional relaxation through activation of the limbic system.

This review highlights that while nanoparticle-loaded dissolving microneedles have considerable promise for enhancing transdermal drug delivery, progress is delayed by insufficient understanding of their in vivo behavior, which the authors emphasize as crucial for advancing clinical applications.

This source reports that while creatine supplementation is popular for improving muscle mass and performance, questions about its efficacy and safety persist. An expert team is reviewing literature to address concerns like water retention, renal effects, and its benefits across different populations and uses.

This review highlights the potential of nanoparticle-based shampoos to improve dandruff treatment and cosmetic performance while noting concerns about nanoparticle toxicity and environmental safety that require further investigation.

This study demonstrates that an injectable gelatin-based hydrogel incorporating zirconium and quercetin promotes diabetic wound healing in vivo by enhancing angiogenesis, collagen deposition, and hair follicle regeneration while providing antibacterial and oxidative stress protection without detectable cytotoxicity.

This study found that adding hair fibers to friction materials increased their friction coefficient stability and impact strength while decreasing wear rates, with 1% hair fiber content notably improving performance.

In this study, ACF sponges with 10% fucoidan significantly promoted wound healing and hair follicle regeneration in rats, showing improved hemostatic and antibacterial performance compared to other formulations.

In this study, a nanofiber system made from α-lactalbumin and soy protein isolate via a waterborne electrospinning process significantly improved wound healing in a rat model of third-degree burns, enhancing outcomes such as re-epithelialization, collagen deposition, and angiogenesis compared to controls.

Androstenedione, a hormone supplement, doesn't improve muscle or performance and can cause harmful side effects.

This review article highlights how hair follicle-targeting drug delivery systems enhance therapeutic outcomes and reduce side effects for treating conditions like androgenetic alopecia and acne vulgaris. The authors discuss current formulations and evaluate their performance in both preclinical and clinical settings.

This study found that controlled thermal straightening can achieve irreversible smoothing of curly hair without chemicals, with effectiveness dependent on temperature and cycles, and silicone enhancing straightening quality.

In this study, adding disinfected feathers to the diet of captive Arctic foxes increased gut bacterial species diversity without changing overall abundance, potentially influencing immune response and physiological performance.