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Eating a balanced diet with the right vitamins and minerals is important for healthy hair, but too many supplements can be harmful.

This study found that patients with alopecia areata had significant systemic inflammation and vitamin D deficiency, with both conditions more pronounced as disease severity increased.

This review explores the potential of herbal therapies and modern delivery methods for managing premature hair greying, highlighting promising plant-based treatments and emphasizing the need for clinical trials to validate their effectiveness.

Lupus can cause different skin problems, and treatments like quitting smoking and using certain creams or medicines can help.

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 supplementing pregnant Hanshan white cashmere goats' diets with selenium yeast led to higher birth weights, improved cashmere quality and yield, and enhanced hair follicle development in their offspring, possibly through increased antioxidant capacity.

This study found that taurine dietary supplementation could reduce lipid metabolism, enhance antioxidant capacity, and improve hormone levels in Angora rabbits, with 0.2% taurine increasing wool production.

This review highlights research reporting that oral collagen peptide supplements are effective in enhancing skin elasticity, hydration, and reducing wrinkles, although results vary across studies. Oral supplementation was generally well-tolerated, and further investigation is needed to optimize formulations and explore topical application challenges.

This study found that taking Vitamin D supplements may be associated with a higher risk of hyperpigmentation after laser hair removal.

This study found that both marine and bovine collagen peptides may help prevent hair loss by supporting epithelial hair follicle stem cell functions, with marine peptides maintaining hair in the growth phase and bovine peptides increasing stem cell presence in hair follicle regions.

This study found that women taking a daily oral supplement with omega-3 fatty acids, phytonutrients, and antioxidants for 14 weeks reported perceived improvements in hair growth, strength, and moisturization.

In this study, researchers examined chicken feather follicle tissues from differently colored chickens and found that the genes SLC45A2 and GPNMB are involved in promoting melanin deposition, which enriches understanding of the genetic mechanisms affecting feather color.

This study examined 1,992 patients at a hospital in India for signs of B12 deficiency and found common symptoms included hair loss, poor memory, and weakness. The study also reported that adding vitamin B12 powder to prepared food could improve blood levels of the vitamin.

This source discusses premature greying of hair, often linked to lifestyle, stress, and nutritional deficiencies, and notes mainstream dermatology focuses on dietary supplements, while homeopathy offers a holistic approach for treatment.

This review found that platelet-rich plasma shows potential in improving melasma, though its overall benefit varies across different treatment methods and may not enhance results when combined with certain other treatments.

In this case study, the researchers reported a rare incidence of bilateral hyperpigmented macules on a patient's lower legs, possibly due to cyclophosphamide, suggesting that this chemotherapy drug may directly stimulate hair follicles to cause skin discoloration.

This source discusses the various causes of premature greying of hair, highlighting lifestyle, genetic factors, and nutritional deficiencies, and contrasts mainstream dermatology's focus on nutritional supplementation with homeopathy's holistic treatment approach for long-term management.

This study examined the factors contributing to gray hair, such as genetics and lifestyle, and found that while graying correlates with some health conditions, it is primarily a physiological process rather than a pathological one.

This study found that in male badgers, seasonal molting and hair growth are influenced by cycles of plasma testosterone and thyroxine, with hormones affecting the timing and progression of these processes.

This study found that the lncRNA018392, responsive to melatonin, accelerates cell proliferation in cashmere goats by recruiting the transcription factor SPI1 to upregulate the nearby gene CSF1R, which may explain the molecular mechanisms of cashmere growth.

This study suggests that melatonin may enhance wool growth in cashmere goats by activating sulfur metabolism genes and high-sulfur protein genes, which are crucial for providing sulfur-containing amino acids needed for wool quality.

VIP reduces hair pigmentation by decreasing melanin production.

This study found that PES1CMU-defatted rice bran (DFRB) showed effective skin whitening and anti-aging properties comparable to standard treatments in cell models, suggesting its potential use in dermatocosmetics.

This study observed that balding was associated with lower total body BMD in men and higher hip BMD in women, possibly due to estrogen use in the latter group.

In this comprehensive review, researchers reported that macromolecules like type I collagen, keratin, and ceramides enhance hair health by improving follicular function and increasing hair density, strength, shine, and resilience, as shown in various in vitro, animal, and human studies.

This study identified more than 100 genetic loci associated with hair color variation in Europeans, explaining a significant portion of the trait's heritability and advancing understanding of hair pigmentation.

This study identified morphotype-specific gene expression patterns in feathers, enhancing understanding of the molecular and cellular processes involved in feather development and diversification.

This study found that rice bran ash extract and orthosilicic acid both increased melanin synthesis and related protein expression in melanocytes, suggesting potential therapeutic use for melanin deficiency.

This study describes a multifunctional hydrogel system designed to treat androgenetic alopecia by integrating nanozymes for reactive oxygen species clearance and melanin nano photothermal agents to enhance hair follicle health, suggesting potential for multi-target precision therapy and improved hair growth.

This study explored spontaneous repigmentation after phenol-croton oil peels in skin of color, finding that temporary hypopigmentation resolved by day 21 in both a black-skin domestic pig model and human clinical observations, highlighting potential for these procedures despite past concerns about pigmentation issues.