July 2025 in “Food Science & Nutrition” Vitamin D supplements improve hair growth and metabolism in rabbits.
Low vitamin D3 and ferritin levels may cause hair loss in pregnant women.
151 citations
,
June 2010 in “Endocrinology and metabolism clinics of North America” Two rare genetic diseases cause severe rickets in children due to defects in vitamin D metabolism.
107 citations
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March 2014 in “BoneKEy Reports” Mutations in the vitamin D receptor cause hereditary vitamin D-resistant rickets, leading to poor bone health and requiring high calcium doses for treatment.
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.
32 citations
,
July 2012 in “Stem Cells Translational Medicine” Vitamin D3 can help improve hair growth by enhancing the function of specific skin cells and could be useful in hair regeneration treatments.
14 citations
,
January 2019 in “PubMed” Vitamin D might be involved in the development of alopecia areata and could help in its treatment.
6 citations
,
August 2020 in “Dermatology and Therapy” People with Alopecia Areata often have lower vitamin D levels, and vitamin D supplements might help treat it.
6 citations
,
January 2014 in “Journal of pediatric endocrinology & metabolism/Journal of pediatric endocrinology and metabolism” Three siblings with a genetic form of rickets showed different symptoms of the disease.
5 citations
,
June 2020 in “Experimental dermatology” Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.
2 citations
,
September 2022 in “Frontiers in Nutrition” High-dose vitamin D3 does not improve symptoms or quality of life in COVID-19 patients after one year.
August 2024 in “IAHS Medical Journal” Low vitamin D and ferritin levels are linked to female hair loss.
378 citations
,
February 2020 in “Nature Reviews Endocrinology”
6 citations
,
November 2017 in “Scientific reports” The R343H mutation in the VDR gene causes vitamin D-resistant rickets with alopecia by impairing specific gene activity.
276 citations
,
April 2003 in “Molecular endocrinology” Vitamin D is important for bones, hair, blood pressure, and breast development.
62 citations
,
January 2009 in “Biochemistry” Vitamin D receptor binds similarly to natural and synthetic ligands, affecting gene regulation.
48 citations
,
January 2015 in “Indian Journal of Dermatology, Venereology and Leprology” Vitamin D is important for skin health and can help treat psoriasis, atopic dermatitis, and vitiligo.
36 citations
,
January 2017 in “Journal of Obstetrics and Gynaecology Research” The review found no clear link between vitamin D receptor gene variations and polycystic ovary syndrome.
18 citations
,
March 2016 in “Journal of Investigative Dermatology” Vitamin D and calcium are essential for normal hair growth.
11 citations
,
January 2017 in “Biochemical and biophysical research communications” 1α,25-dihydroxyvitamin D3 directly affects cartilage growth and development.
8 citations
,
June 2020 in “International Journal of Dermatology” Men with early hair loss have lower vitamin D levels.
1 citations
,
January 2016 in “Journal of Nepal Paediatric Society” A child with rickets and hair loss might have a rare type of rickets that doesn't improve much with usual vitamin D and calcium treatment.
37 citations
,
June 2018 in “Clinical and Experimental Medicine” People with alopecia areata often have lower vitamin D levels and more inflammation, suggesting vitamin D might be involved in the condition.
25 citations
,
March 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” Vitamin D Receptor is needed for hair growth in mice but not for skin stem cell maintenance.
11 citations
,
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.
3 citations
,
November 2020 in “Curēus” A child's hair loss from alopecia areata was fully reversed in five months using diet and supplements.
2 citations
,
July 2018 in “Elsevier eBooks” Some supplements may help with hair loss, but there's not enough strong evidence to recommend them without doctor advice.
1 citations
,
January 2021 in “Journal of Dermatology and Dermatologic Surgery” Taking Vitamin D supplements may increase the risk of skin darkening after laser hair removal.
December 2025 in “Frontiers in Nutrition” Collagen supplements may improve skin, joints, and recovery, especially with added nutrients.
September 2025 in “Clinics and Practice” Collagen with calcium and vitamin D improves bone health, skin elasticity, and reduces hair loss in menopausal women.