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This study discusses the potential association between low vitamin D levels and insulin resistance, suggesting that vitamin D deficiency may contribute to disorders like obesity and diabetes, but emphasizes the need for further research to confirm these links.

This study found that berberine supplementation improved gut microbiota composition and reduced obesity-related hepatic inflammation and oxidative stress in genetically obese mice.

This review summarizes current knowledge on the efficacy of natural molecule supplementation, such as inositols and omega-3 fatty acids, in managing PCOS symptoms but reports no new clinical results.

This article reviews evidence suggesting that vitamin D may help manage Hashimoto’s thyroiditis by affecting immune pathways and improving thyroid function, though more research is needed to fully understand its therapeutic potential.

This study found that curcumin may improve glycemic control and certain aspects of lipid metabolism in patients with polycystic ovary syndrome.

In this study, a very-low-calorie diet led to greater weight loss and improvements in hyperandrogenaemia and metabolic markers in obese women with polycystic ovary syndrome compared to a moderate energy deficit approach over eight weeks.

This review summarizes existing reports on placenta extract for treating liver injury and discusses its mechanisms but provides no new clinical results.

This study found that Rumex japonicus extract may help reduce symptoms of atopic dermatitis by inhibiting inflammatory responses in both cell cultures and a mouse model.

This study reports that polyphenols from Annurca apples may safely promote hair growth and protect against chemotherapy-induced alopecia without interfering with chemotherapy regimens.

This review discusses the relationship between zinc deficiency and skin disorders, emphasizing zinc transporters' roles, but it reports no new clinical results; the authors highlight potential benefits of regulating zinc levels via transporters.

This study investigated a novel extract from pomegranate byproducts, finding it effective in reducing blood pressure and inflammation in hypertensive rats, comparable to Captopril, while also highlighting the extract's potential to enhance the pomegranate supply chain and environmental benefits.

This review discusses potential agents, including acetyl-L-carnitine and vitamins, for repurposing in managing chemotherapy-induced peripheral neuropathy and reports no clinical results; the authors emphasize the need for further research.

This review discusses new research on the role of retinoids in skin and hair health and reports no clinical results.

This study found that GS-KG9 and GS-E3D, bioactive ginseng extracts, reduced BBB disruption and neuronal apoptosis in the hippocampus of diabetic rats, suggesting potential therapeutic effects for diabetic patients.

In this review, researchers highlighted that natural polyphenolics like flavonoids and resveratrol may help enhance testosterone production in aging males by boosting the expression of the Star gene in Leydig cells, potentially preventing age-related degenerative conditions linked to testosterone insufficiency.

In this study, fisetin applied to the dorsal skin of mice activated hair follicle stem cells through exosome secretion from keratinocytes, promoting hair growth.

In this study, Ishige sinicola extract was observed to improve bone density and structure in an animal model of estrogen deficiency-induced osteoporosis, suggesting its potential as a therapeutic option for postmenopausal osteoporosis by inhibiting osteoclast formation without cytotoxic effects.

This study found that biotin deficiency in mice led to reduced zinc levels, disappearance of epidermal Langerhans cells, and increased ATP production, resulting in prolonged irritant contact dermatitis.

This randomized controlled trial found that consuming *Gynostemma pentaphyllum* extract significantly improved hair elasticity, density, and diameter over 24 weeks without severe adverse events, suggesting it as a safe functional food ingredient for hair health improvement.

This review highlights the complex relationship between eating disorders and diabetes, indicating that individuals with diabetes may be at increased risk for eating disorders due to dietary and management demands, which can in turn affect blood sugar control.

In a study on mice, cow placenta extract showed strong antioxidant activities and reduced collagen damage, suggesting it could help delay skin aging caused by D-galactose.

In this study, saponins from Korean red ginseng were found to protect against the harmful effects of airborne particulate matter on human skin cells by reducing oxidative stress, inflammation, leptin expression, and melanin production.

This study found that women with polycystic ovary syndrome had deficient or suboptimal serum vitamin D levels, but the effects of vitamin D on metabolic syndrome and hormonal balance remain unclear.

This joint consensus statement from several Polish professional associations discusses strategies for improving obesity treatment and enhancing primary care's role in managing obesity, with no new empirical data reported.

This study in mice found that maternal iron deficiency led to hair loss and growth abnormalities in offspring due to increased oxidative stress and disrupted signaling pathways, but postnatal iron supplementation was able to reverse these effects.

This study found that enhancing quercetin bioavailability with EubioQuercetin significantly improved external aging signs in mice and influenced gut microbiota and intestinal gene expression, suggesting potential modulation through the gut microbiota–intestinal barrier axis.

This study found that adequate vitamin D status is necessary for metformin to effectively reduce prolactin levels in men with iatrogenic hyperprolactinemia, while improvements in glycemic control were observed across all vitamin D groups.

This systematic review found that probiotic supplementation improved sleep quality, reduced depressive symptoms, and enhanced aspects of quality of life in women with PCOS, though the findings are limited by a small number of studies and variable methods.

This study found that Ageratum conyzoides extract enhanced hair growth in mice and human follicle cells, showing potential for hormonal modulation, pathway activation, and antioxidant protection; however, further clinical studies are needed to confirm efficacy in humans.

This study highlights conflicting evidence on the safety and efficacy of nutritional supplements for hair loss in breast cancer patients, emphasizing the need for oncologist management and further research.