81 citations
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March 1985 in “Journal of Clinical Investigation” This study found that measuring 24-OHase induction by 1,25(OH)2D3 in cultured skin fibroblasts is a sensitive test for detecting genetic defects in the 1,25(OH)2D effector pathway.
140 citations
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April 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that mice lacking the 1αOHase enzyme, which is responsible for producing a key vitamin D metabolite, showed impaired epidermal differentiation and delayed recovery of skin barrier function after disruption.
11 citations
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January 2014 in “Egyptian Journal of Dermatology and Venereology” This study found that women with female-pattern hair loss had significantly lower serum levels of 25-hydroxyvitamin D compared to healthy controls, but it does not establish causation.
14 citations
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January 2013 in “Journal of the Egyptian Women's Dermatologic Society /Journal of the Egyptian Women's Dermatologic Society” 845 citations
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February 2001 in “The Journal of Clinical Endocrinology & Metabolism” This study identified the presence of the enzyme 1 alpha-hydroxylase in various extrarenal tissues, suggesting its potential role in modulating vitamin D function in peripheral tissues.
18 citations
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June 2001 in “Journal of Investigative Dermatology” This study found that transfecting keratinocytes with the 1α-OHase gene enhances local production of 1α,25-dihydroxyvitamin D3, suggesting a potential new therapy for skin conditions like psoriasis without causing hypercalcemia or resistance.
5 citations
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January 2020 in “The mental health clinician” This case report found that vitamin D3 supplementation may improve hair growth and reduce hair-pulling behavior in patients with trichotillomania, as observed in two female patients over 3 to 4 months.
6 citations
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August 1989 in “European journal of pediatrics” This case study describes a child with rickets and alopecia who responded to a small dose of 1-a-hydroxyvitamin D3, but her alopecia remained unchanged despite treatment.
January 2021 in “Medical Research Archives” This study observed that 25-hydroxyvitamin D3 restored rickets symptoms in genetically modified rats, suggesting its direct action through vitamin D receptor pathways.
139 citations
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February 2014 in “Journal of Advanced Research” This review explores the impact of vitamin D deficiency on the skin from a dermatological perspective, but reports no new clinical results.
January 2025 in “Scientific Reports” This study explored 25-hydroxyvitamin D3 levels in hair samples from participants in Aberdeen and suggested potential links between hair vitamin D levels, seasonal UVB exposure, and marine diet in both modern and archaeological contexts.
November 2025 in “Fayoum University Medical Journal/Fayoum University Medical Journal ” This study found that intralesional vitamin D3 injections significantly increased serum vitamin D3 levels in patients with localized alopecia areata, although baseline vitamin D3 levels did not predict disease severity or treatment response.
57 citations
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August 1997 in “Pediatrics International” This abstract discusses two types of hereditary vitamin D metabolism defects, VDDR I and VDDR II, and reports on their distinct characteristics and treatment responses, without presenting new clinical data.
23 citations
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October 2009 in “Gastroenterology” This article reviews the multifaceted roles of vitamin D beyond bone health and notes its potential involvement in reducing risks of certain cancers and autoimmune diseases, but it presents no new clinical results.
11 citations
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January 2011 in “Turkish Journal of Medical Sciences” This study found that iron deficiency anemia is a key factor in the development of telogen effluvium, and higher 25-hydroxyvitamin D3 levels in TE patients may be linked to increased UV exposure.
1 citations
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June 2021 in “International Journal of Dermatology” 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.
4 citations
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January 2023 in “Pharmacology” This study found that euthyroid women with Hashimoto’s thyroiditis experienced less benefit from atorvastatin treatment in terms of cardiometabolic marker improvements compared to women with hypercholesterolemia but without thyroid issues, indicating a differential response in these populations.
1 citations
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January 2016 in “Journal of Nepal Paediatric Society” This case report discusses a 27-month-old girl with vitamin D-dependent rickets type II, who showed minor improvement in skeletal features and alopecia after high-dose oral calcium and vitamin D3 treatment.
54 citations
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January 2012 in “Vitamins & Trace Elements” This study found significantly lower serum vitamin D concentrations in patients with alopecia areata compared to healthy controls, suggesting that vitamin D deficiency may be a risk factor for this autoimmune hair loss disease.
May 2024 in “Journal of cosmetic dermatology” This study found that early-onset male androgenetic alopecia is associated with abnormal lipid metabolism and lower levels of certain serum markers, which may serve as risk factors or protective factors for the condition.
July 2023 in “Media Dermato Venereologica Indonesiana” 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.
September 2021 in “Journal of advances in medicine and medical research” This study indicated a correlation between female pattern hair loss and decreased serum levels of Vitamin D3, suggesting that Vitamin D3 evaluation may be important in managing this condition.
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.
10 citations
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May 2017 in “PLOS ONE” This study found that serum 25-hydroxyvitamin D was inversely associated with serum ferritin levels in Korean men, positively associated in premenopausal women, and not associated in postmenopausal women.
40 citations
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April 2013 in “Dermato-endocrinology” In this study, researchers observed vitamin D insufficiency in many patients with Alopecia Areata, suggesting its potential role in managing this autoimmune condition.
7 citations
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January 2017 in “Journal of Clinical Biochemistry and Nutrition” This study found that vitamin D was positively associated with serum ferritin levels in Korean women without metabolic syndrome, but this association was not observed in those with metabolic syndrome.
5 citations
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June 2020 in “Experimental dermatology” This study found that redheaded individuals had higher levels of vitamin D precursor 25(OH)D3 compared to non-redheaded individuals, suggesting a physiological adaptation to low UVB radiation in Europe.
11 citations
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January 2017 in “Biochemical and biophysical research communications” This study observed that Cyp27b1−/− mice exhibited growth and skeletal abnormalities similar to those of Vdr−/− mice, despite differences like the development of alopecia in Vdr−/− mice, suggesting that 1α,25D3 may directly influence chondrocyte proliferation and differentiation.
4 citations
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April 2020 in “Journal of Cosmetic Dermatology” This study found that Chinese patients with alopecia areata, female pattern hair loss, and male androgenetic alopecia had significantly lower serum vitamin D levels than healthy individuals.
![Distribution of 1,25-Dihydroxyvitamin D3[22-Oxa] In Vivo Receptor Binding in Adult and Developing Skin](/images/assets/d9b990e6-6243-4abe-b868-68801a5844f7/small/35023.jpg)
15 citations
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January 1995 in “Archives of dermatological research” In this study, OCT showed strong nuclear binding in certain skin cells, suggesting similar genomic effects to vitamin D with potential therapeutic benefits due to its lower calcaemic effect.