845 citations
,
February 2001 in “The Journal of Clinical Endocrinology & Metabolism” The enzyme for activating vitamin D is found in many body tissues, not just the kidneys.
140 citations
,
April 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzyme 25 Hydroxyvitamin D 1 α-Hydroxylase is essential for healthy skin and recovery after skin damage.
81 citations
,
March 1985 in “Journal of Clinical Investigation” Measuring 24-OHase induction helps identify defects in vitamin D processing and predict treatment response.
18 citations
,
June 2001 in “Journal of Investigative Dermatology” Adding a specific gene to skin cells can help treat skin disorders like psoriasis.
10 citations
,
May 2017 in “PLOS ONE” Men and premenopausal women in Korea show different patterns in iron and vitamin D levels, with no clear pattern for postmenopausal women.
7 citations
,
January 2017 in “Journal of Clinical Biochemistry and Nutrition” Higher vitamin D levels are linked to higher iron levels in Korean women without metabolic syndrome, but not in those with it.
5 citations
,
January 2020 in “The mental health clinician” Vitamin D supplements may reduce hair-pulling in people with Trichotillomania.
April 2025 in “Egyptian Journal of Medical Research” People with Telogen Effluvium have lower vitamin D levels.
January 2020 in “Turkiye Klinikleri Journal of Dermatology” People with chronic hair shedding had much lower vitamin D levels compared to healthy people.
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.
March 2014 in “Journal of The American Academy of Dermatology” Vitamin D deficiency is common in temporary hair loss, and stress is often a suspected cause.
11 citations
,
January 2014 in “Egyptian Journal of Dermatology and Venereology” Women losing hair might have lower levels of vitamin D.
4 citations
,
April 2020 in “Journal of Cosmetic Dermatology” Low vitamin D levels are linked to different types of hair loss.
November 2023 in “Journal of Cosmetic Dermatology” People with non-scarring hair loss often have lower vitamin D levels than those without hair loss.
March 2023 in “Pakistan Journal of Medical and Health Sciences” Low vitamin D levels are linked to higher rates of hair loss in women.
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.
January 2019 in “Egyptian Journal of Dermatology and Venereology /Egyptian Journal of Dermatology and Venerology” Low vitamin D levels might indicate more severe hair loss in alopecia areata patients.
2 citations
,
September 2021 Patients with alopecia areata may have lower vitamin D levels than healthy people.
2 citations
,
April 2019 in “Acta medica Philippina/Acta Medica Philippina” People with alopecia areata often have lower vitamin D levels than healthy people.
September 2025 in “Journal of Dhaka Medical College” Lower vitamin D levels are linked to more severe alopecia areata.
September 2023 in “Diagnostics” Low vitamin D levels may affect ovulation and progesterone in infertile women.
14 citations
,
January 2013 in “Journal of the Egyptian Women's Dermatologic Society /Journal of the Egyptian Women's Dermatologic Society” 3 citations
,
January 2015 in “Journal of the Egyptian Womenʼs Dermatologic Society”
6 citations
,
August 1989 in “European journal of pediatrics” Child with rickets improved with a specific vitamin D therapy, but alopecia did not change.
139 citations
,
February 2014 in “Journal of Advanced Research” Vitamin D is important for skin health and may affect conditions like psoriasis and hair loss, but more research is needed to understand its role fully.
105 citations
,
March 2014 in “British journal of dermatology/British journal of dermatology, Supplement” Alopecia areata patients often have low vitamin D levels, suggesting they might benefit from vitamin D supplements.
57 citations
,
August 1997 in “Pediatrics International” VDDR I and II are genetic disorders affecting vitamin D use, causing rickets, with VDDR I treatable by vitamin D supplements and VDDR II needing high doses and calcium.
54 citations
,
January 2012 in “Vitamins & Trace Elements” People with Alopecia Areata have lower vitamin D levels.
32 citations
,
December 2017 in “Journal of the American Academy of Dermatology” Alopecia areata patients often have low vitamin D levels.
32 citations
,
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.