October 2021 in “International Journal of Research in Dermatology” People with alopecia areata often have low vitamin D levels, which may worsen their hair loss.
January 2021 in “İzmir Dr.Behçet Uz çocuk hastanesi dergisi” Children with Alopecia Areata often have lower vitamin D and B12 levels and higher thyroid activity.
November 2025 in “Khalij-Libya Journal of Dental and Medical Research” Hair loss is linked to low levels of zinc, vitamin D, and ferritin.
January 2023 in “Pakistan Armed Forces Medical Journal” People with vitiligo tend to have lower vitamin D levels.
7 citations
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August 2021 in “Open Access Macedonian Journal of Medical Sciences” The VDR gene polymorphism does not affect BDNF levels in autoimmune thyroiditis and hypothyroidism patients.
4 citations
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April 2020 in “Journal of Cosmetic Dermatology” Low vitamin D levels are linked to different types of hair loss.
September 2023 in “Diagnostics” Low vitamin D levels may affect ovulation and progesterone in infertile women.
April 2023 in “Dohuk medical journal” People with telogen effluvium often have much lower vitamin D levels than healthy individuals.
January 2017 in “Turkiye Klinikleri Journal of Dermatology” Low vitamin D levels, not ferritin levels, were found in patients with hair loss condition telogen effluvium.
July 2016 in “Journal of Dermatology and Cosmetic” Many people with hair loss have low vitamin D levels.
July 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Men with early baldness often have low vitamin D levels.
March 2023 in “Pakistan Journal of Medical and Health Sciences” Low vitamin D levels are linked to higher rates of hair loss in women.
May 2023 in “Minia Journal of Medical Research” Vitamin D levels in hair and serum are similar for males and females.
Low Vitamin D3 levels are linked to hair loss in female students in South India.
January 2022 in “International Journal of Medicine in Developing Countries” Many patients with hair loss had low iron and vitamin D levels, but thyroid issues were not common.
January 2012 in “Vitamins & trace elements” Smoking and drinking can lower vitamin levels and potentially trigger early hair loss, but overall vitamin levels don't seem to affect hair loss duration.
11 citations
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January 2014 in “Egyptian Journal of Dermatology and Venereology” Women losing hair might have lower levels of vitamin D.
11 citations
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January 2011 in “Turkish Journal of Medical Sciences” Low iron levels are a significant risk factor for hair loss, while high vitamin D levels might be a response to hair loss, not a cause.
1 citations
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October 2020 in “Journal of Cosmetic Dermatology” Low iron levels are linked to premature graying of hair, but vitamin D levels are not.
October 2025 in “Medical Journal of Babylon” Higher testosterone and lower Vitamin D levels are linked to hair loss in female COVID-19 patients.
1 citations
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November 2011 in “Dermatologica Sinica” Women using hair relaxers with alopecia had lower zinc levels, suggesting zinc deficiency might contribute to hair loss.
6 citations
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August 2020 in “Dermatology and Therapy” People with Alopecia Areata often have lower vitamin D levels, and vitamin D supplements might help treat it.
2 citations
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September 2021 Patients with alopecia areata may have lower vitamin D levels than healthy people.
2 citations
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April 2019 in “Acta medica Philippina/Acta Medica Philippina” People with alopecia areata often have lower vitamin D levels than healthy people.
September 2024 in “African Journal of Biomedical Research” Alopecia areata patients have lower vitamin D and slightly lower copper levels, so these should be checked.
January 2024 in “World Journal of Biology Pharmacy and Health Sciences” High prolactin and low vitamin D levels may be linked to hair loss in women.
2 citations
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March 2023 in “3C Empresa Investigación y pensamiento crítico” Alopecia areata patients have higher IFN-γ and low vitamin D3 levels.
January 2017 in “International Journal of Trichology” Vitamin D supplements might help reduce hair fall.
29 citations
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December 2017 in “International Journal of Dermatology” People with alopecia areata often have lower vitamin D levels, which are linked to more severe and longer-lasting hair loss, but vitamin D receptor levels in the skin don't show the same pattern and don't predict treatment success.
14 citations
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September 2021 in “Journal of Cosmetic Dermatology” Low vitamin D levels are linked to various types of hair loss, but more research is needed before using it as a treatment.