July 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Knuckle darkening can be an early sign of vitamin B12 deficiency.
April 2024 in “The Egyptian Family Medicine Journal/The Egyptian Family Medicine Journal ” Vitamin D supplements significantly improved post-COVID-19 symptoms in deficient patients.
January 2023 in “Pakistan Armed Forces Medical Journal” Vitamin D levels are not linked to Alopecia Areata.
1 citations
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September 2021 in “Mağallaẗ Kulliyyaẗ al-ṭibb Baġdād” Low vitamin D levels may cause hair loss in women.
166 citations
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February 2005 in “Behavioural brain research” Vitamin D receptor knockout mice have significant motor impairments but no cognitive deficits.
55 citations
,
January 2020 in “Advances in experimental medicine and biology” Vitamin D and its receptor may help prevent skin cancer.
5 citations
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May 2018 in “Journal of the American Academy of Dermatology” Lower vitamin D levels might be linked to more severe alopecia areata, but more research is needed to understand if vitamin D can help treat it.
November 2025 in “Fayoum University Medical Journal/Fayoum University Medical Journal ” Intralesional vitamin D3 injections can improve vitamin D3 levels and may help treat alopecia areata.
34 citations
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August 2012 in “Calcified Tissue International”
Low vitamin D3 and ferritin levels may cause hair loss in pregnant women.
February 2018 in “Egyptian Journal of Radiation Sciences and Applications” Patients with Discoid Lupus Erythematosus have lower vitamin D and antioxidant levels and higher oxidative stress.
1 citations
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January 2020 in “Journal of Crohn's and colitis” Many people with inflammatory bowel disease have a vitamin C deficiency, which can lead to scurvy symptoms.
June 2024 in “The Journal of Nutritional Biochemistry” 1,25-(OH)2D3 helps hair grow by blocking certain harmful signals.
2 citations
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January 2008 in “Cuadernos de Psiquiatría comunitaria” Vitamin D and its receptor help regulate skin functions like cell growth, immunity, and hair cycle.
January 2025 in “Scientific Reports” Hair analysis can show changes in vitamin D levels over time.
137 citations
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April 2001 in “Journal of Clinical Investigation” Alopecia in these mice is caused by defective hair cycle communication due to missing vitamin D receptor function, not vitamin D levels.
January 2005 in “mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich)” Vitamin D and glucocorticoids affect bone growth, metabolism, and immune response.
4 citations
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January 2017 in “Journal of pediatric endocrinology & metabolism/Journal of pediatric endocrinology and metabolism” Two different mutations in the vitamin D receptor gene cause different symptoms and responses to treatment in Lebanese patients with hereditary rickets.
1 citations
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January 1998 in “International journal of cancer” Rubbing vitamin D3 on skin can help prevent hair loss from chemotherapy and slow breast tumor growth in mice.
April 2025 in “Skin Appendage Disorders” Vitamin D may help reduce severity and relapse of alopecia areata.
3 citations
,
August 2024 in “Middle East Fertility Society Journal” Vitamin D may help improve hormone levels in women with PCOS.
7 citations
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January 2019 in “Indian dermatology online journal” People with alopecia areata often have lower vitamin D levels, which may be linked to the condition's severity.
March 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Vitamin D receptor is key to hair growth, not vitamin D itself.
The vitamin D receptor has many roles in the body beyond managing calcium, affecting the immune system, hair growth, muscles, fat, bone marrow, and cancer cells.
May 2024 in “International journal of research in dermatology” Low vitamin D levels are linked to increased risk of male pattern baldness.
32 citations
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December 2017 in “International Journal of Molecular Sciences” Low vitamin D might be linked to certain types of hair loss, and supplements could help, but more research is needed.
Adequate vitamin D might lower, and high hair chromium might increase DNA damage in obese women.
November 2023 in “Journal of Cosmetic Dermatology” People with non-scarring hair loss often have lower vitamin D levels than those without hair loss.
20 citations
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February 2018 in “Journal of the European Academy of Dermatology and Venereology” Topical vitamin C may help treat skin fragility in the elderly.
6 citations
,
January 2021 in “Journal of Nutritional Science and Vitaminology” Taking vitamin D3 pills helped improve hair growth in women with a certain type of hair loss.