20 citations
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November 2008 Vitamin D is important for regulating calcium, phosphate, and hair health.
July 2026 in “Journal of Cutaneous and Aesthetic Surgery” Male hair loss is mainly due to androgens, while female hair loss involves hormones, vitamins, and genetics.
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.
May 2020 in “Current developments in nutrition” Vitamin A affects the resting phase of hair growth, with both low and high levels increasing the number of hair follicles in this phase.