185 citations
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June 2011 in “Molecular and cellular endocrinology” Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.
170 citations
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May 1979 in “The journal of pediatrics/The Journal of pediatrics” Two sisters with rickets and hair loss had a genetic issue with vitamin D processing, and only improved when given phosphorus supplements.
July 2025 in “Food Science & Nutrition” Vitamin D supplements improve hair growth and metabolism in rabbits.
20 citations
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November 2008 Vitamin D is important for regulating calcium, phosphate, and hair health.
1 citations
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June 2023 in “Nutrients” Vitamin D deficiency is linked to a higher chance of metabolic syndrome in women with PCOS.