RT Journal Article SR Electronic T1 Vitamin D Deficiency and Hair Loss: A Case Report and Review of the Literature for Diagnosis and Treatment JF International Society of Hair Restoration Surgery FD Publication of the International Society of Hair Restoration Surgery SP 113 OP 122 DO 10.33589/32.4.113 VO 32 IS 4 A1 Sharon A. Keene YR 2022 UL http://www.ISHRS-HTForum.org/content/32/4/113.abstract 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.