PT - JOURNAL ARTICLE AU - Keene, Sharon A. TI - Vitamin D Deficiency and Hair Loss: A Case Report and Review of the Literature for Diagnosis and Treatment AID - 10.33589/32.4.113 DP - 2022 Jul 01 TA - International Society of Hair Restoration Surgery PG - 113--122 VI - 32 IP - 4 4099 - http://www.ISHRS-HTForum.org/content/32/4/113.short 4100 - http://www.ISHRS-HTForum.org/content/32/4/113.full AB - A small number of case reports seem to suggest a relationship between vitamin D deficiency and hair thinning. This article takes a look at the link between vitamin D and hair loss and examines the role of vitamin D in hair growth. Although comprehensive research on the direct link between vitamin D deficiency and hair loss in androgenetic alopecia remains incomplete, this article will discuss what we do know so that you can consider supplementation as a potential medical treatment for hair loss in patients where vitamin D deficiency is identified.