January 2012 in “Vitamins & trace elements” This study observed that smokers and alcohol consumers with androgenetic alopecia had significantly lower serum levels of antioxidant vitamins, and these habits may trigger earlier onset of alopecia in susceptible individuals.
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December 2021 in “Cureus” This review discusses the potential link between low serum vitamin D levels and androgenetic alopecia and reports that vitamin D might be useful for diagnosis and treatment, but no new clinical results are included.
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July 2021 in “Fayoum University Medical Journal” This study found that vitamin D levels were significantly lower in men with androgenetic alopecia compared to healthy controls, while ferritin levels showed no significant difference.
January 2025 in “Egyptian Journal of Dermatology and Venerology” This study found that COVID-19 vaccination initially lowered vitamin D levels in serum and hair but increased serum levels after the second dose, except for the Pfizer group. Hair vitamin D showed a nonsignificant increase, and hair loss was most common with the AstraZeneca vaccine.
February 2025 in “Folia Medica” This study found that men with androgenetic alopecia had significantly lower serum vitamin D levels compared to controls and the deficiency strongly correlated with the severity of the condition.
