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This review discusses the potential role of vitamin D deficiency in cardiovascular and renal diseases and suggests that supplemental vitamin D could benefit cardiovascular outcomes, especially in African American and postmenopausal women; it reports no new clinical findings.

This study examines how the Severity of Alopecia Tool score was used to assess Alopecia Areata in patients while excluding systemic conditions that might affect vitamin D levels, but reports no new clinical results.

This study found no significant association between vitamin D levels and alopecia areata in patients when gender was accounted for, but vitamin D levels were lower in patients with nail involvement.

This study suggests that vitamin D treatment may be less effective in reducing thyroid autoimmunity for euthyroid men with early-onset androgenic alopecia compared to other men with autoimmune thyroiditis.

This study among ethnic Saudi Arabian women concluded that symptoms like muscle cramps, fatigue, mood swings, hair loss, back pain, and weight gain were more common in those with lower vitamin D levels.

In this study, researchers observed that dietary vitamin D intake and light exposure play a crucial role in vitamin D metabolism in mice, suggesting similar importance for human health in maintaining optimal vitamin D levels.

This study found that vitamin D regulates cholesterol metabolism and may influence prostate cancer development through mechanisms affecting prostate cell growth and sex hormone metabolism.

This article reviews the potential role of vitamin D supplementation as an adjunct to alemtuzumab therapy in multiple sclerosis management, noting its possible benefits for autoimmune comorbidities and patient adherence, but reports no new clinical results.

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 observed that Egyptian patients with discoid lupus erythematosus have significantly lower serum vitamin D3 and antioxidant levels compared to healthy controls, suggesting potential benefits of vitamin D3 and antioxidant supplementation.

This study, conducted among 50 women with female-pattern hair loss, observed that 89% had deficient or insufficient vitamin D levels and also showed low ferritin levels, suggesting these deficiencies may contribute to hair loss.

This study found that lower vitamin D levels were inversely associated with the severity of female pattern hair loss and patchy alopecia areata, but not with telogen effluvium.

This review suggests that decreased serum 25-hydroxyvitamin D levels may play a role in different types of non-scarring alopecia, but further studies are needed to explore vitamin D supplementation as a therapeutic option.

This study suggests that lower serum and tissue vitamin D receptor levels in alopecia areata and androgenetic alopecia patients may play a role in the pathogenesis of these hair diseases.

This study found a significant correlation between vitamin D deficiency and the severity of androgenetic alopecia in males, suggesting that vitamin D may influence the condition's premature onset.

In this study, a Chinese Han family with hereditary vitamin D-resistant rickets was found to have a homozygous missense mutation in the VDR gene, and the affected individual uniquely responded well to treatment with oral calcium and low-dose calcitriol.

This study found that specific polymorphisms in the VDR gene, Taq1, and Cdx1, were significantly associated with increased risk of chronic telogen effluvium in women.

This study found no significant association between premature hair graying and serum ferritin or vitamin D levels in young adult males at Universitas Sumatera Utara.

This meta-regression analysis observed a slightly negative but nonsignificant correlation between vitamin D levels and the severity of alopecia areata, suggesting a complex relationship that requires further investigation.

This study found that DNA damage in obese women was linked to serum 25-hydroxyvitamin D and hair chromium levels, with higher serum vitamin D associated with less damage and higher chromium with more damage.

This study found that patients with alopecia areata had significantly lower serum vitamin D levels compared to controls, but these levels did not impact disease severity or pattern.

This review discusses the potential role of vitamin D supplementation as a therapeutic option for alopecia areata due to its immune-regulating effects and reports no new clinical results.

This review reports that vitamin D plays an important role in hair follicle development, with a negative correlation observed between serum vitamin D levels and female pattern hair loss, suggesting further research is needed before recommending vitamin D as a treatment.

This study observed that 25-hydroxyvitamin D3 restored rickets symptoms in genetically modified rats, suggesting its direct action through vitamin D receptor pathways.

This study found that patients with telogen effluvium had significantly lower serum ferritin levels compared to healthy controls, suggesting a relationship between telogen effluvium and decreased iron stores.

This study suggests that unliganded vitamin D receptors in mice may cause more severe skeletal and mineral ion defects than VDR-null conditions, and vitamin D analogues may restore function in specific VDR mutations.

This article reviews the influence of vitamin D on various dermatological diseases and suggests that vitamin D supplementation might aid in maintaining skin cell homeostasis; it reports no new clinical results.

The authors of this meta-analysis suggest that intralesional injections of methotrexate and vitamin D3 may serve as safe and effective alternatives to triamcinolone acetonide for treating localized alopecia areata in adults, with trichoscopy aiding early detection of treatment effects.

This study found that vitamin D receptor activation in primary keratinocytes can occur independently of the 1,25-dihydroxyvitamin D₃ ligand, likely through interaction with retinoid X receptors.

This research suggests that the vitamin D receptor may regulate hair follicle cycling and provide genoprotection against skin carcinogenesis through a mechanism independent of 1,25-dihydroxyvitamin D3, based on evidence from mouse models.