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This clinical case report found that after 12 months, hair transplantation using direct hair implantation in a patient with stage IV androgenetic alopecia showed high graft survival rates and preserved natural hair growth.

This study reviewed treatment options for telogen effluvium and concluded that while acute cases may resolve naturally, topical minoxidil, vitamin D, and platelet-rich plasma might benefit chronic cases based on clinical judgment.

This chapter explores the causes and management of hair damage, highlighting effective repair strategies such as protein and lipid replenishment with keratin peptides and citric acid, and identifies social media's role in consumer preferences for protective and conditioning products.

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 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 case series found that topical janus kinase inhibitors, along with oral fexofenadine and vitamin D supplementation, significantly reduced disease severity in Black pediatric patients with alopecia areata, demonstrating substantial hair regrowth and minimal adverse side effects.

This review discusses the role of vitamin D receptor signaling in hair follicle biology for alopecia treatment and underscores the need for continued research, without presenting new clinical results.

In this case report, researchers describe a 44-year-old woman with refractory patch alopecia areata achieving complete hair regrowth using a multi-modal approach of systemic and topical cholecalciferol with microneedling, although systemic vitamin D repletion remains a significant confounder.

This review highlights the critical role of iron in skin functions and suggests potential dermatologic therapies targeting the iron-skin axis.

The testes significantly contribute to vitamin D metabolism and may affect male reproductive health and conditions like hair loss.

This study found no significant difference in serum Vitamin D levels between children with alopecia areata and healthy controls, nor was there any correlation between Vitamin D levels and the severity, duration, or pattern of the condition, or nail changes.

This study found that patients with alopecia, particularly alopecia areata and female pattern hair loss, often have vitamin D deficiency, suggesting that screening for vitamin D could benefit these patients.

This study emphasizes the importance of educating the elderly on vitamin D's role in hair health, recommending dietary and lifestyle interventions, including vitamin D supplementation, to address hair quality issues such as loss and brittleness.

This study found that vitamin D deficiency was significantly more prevalent among men with androgenetic alopecia in eastern Uttar Pradesh, India, than in age-matched controls, suggesting a potential link between vitamin D levels and the condition's pathogenesis.

In this study, researchers found a significant relationship between mid-luteal progesterone levels and 25-hydroxy vitamin D levels in infertile patients, suggesting that about 20 ng/mL of vitamin D may be necessary to trigger ovulation or support progesterone secretion.

In this study, researchers highlighted that in sarcoidosis, macrophages in granulomas can produce vitamin D, potentially leading to calcium imbalances, where vitamin D supplementation may cause hypercalcemia, necessitating careful laboratory assessment before supplementation.

This case study reports that a 52-year-old woman with Sheehan syndrome improved after receiving hormone replacement therapy, highlighting its importance for patients with similar symptoms.

This article explores the possible link between vitamin D deficiency and hair loss, but reports no definitive clinical findings, highlighting the need for further research.

This study observed lower vitamin D levels in alopecia areata patients compared to healthy controls and suggested a possible causal role of vitamin D deficiency in the condition.

This study found that patients with chronic telogen effluvium had significantly lower serum 25-OH vitamin D levels compared to healthy individuals, suggesting a potential link between vitamin D deficiency and this hair loss condition.

This study found that all participating depressed women in the sample had vitamin D deficiency or insufficiency, suggesting a possible association between vitamin D levels and depression among women in Iraq.

This case report describes a 4-year-old girl with trichotillomania triggered by vitamin D deficiency, who showed dramatic improvement with vitamin D therapy.

This study found a significant association between iron deficiency anemia and telogen effluvium in women of childbearing age, with noticeable improvement in hair loss after four weeks of oral iron supplementation.

This study observed that serum Vitamin D3 levels were low among South Indian students with diffuse hair fall, highlighting global hypovitaminosis D as a concern and suggesting possible dietary or sunlight exposure influences.

In this study, dogs with Vitamin A deficiency showed significant clinical and hematological improvement after receiving Vitamin A supplementation.

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

This case report suggests that isolated amylase deficiency can lead to failure to thrive in children, and pancreatic enzyme supplementation may improve associated symptoms.

This article reviews potential pathomechanisms of vitiligo, emphasizing membrane alterations involving cholesterol and cardiolipin, but reports no new clinical findings.

Cats with Feline Symmetrical Alopecia can regrow hair with proper treatment based on the specific cause, including diet, medication, or stress management.

Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.