Micronutrients in Hair Loss

    July 2018 in “ Our Dermatology Online ”
    Susana A. Ruiz-Tagle, Marcella Maria de Souza Araújo Figueira, Verónica Vial, Leonardo Espinoza-Benavides, M. C. Saenz De Santa Maria
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    TLDR Some vitamins and minerals are important for preventing hair loss, but treating hair loss with them without a known deficiency is not proven effective.
    The 2018 study "Micronutrients in hair loss" reviewed 92 articles and found that certain micronutrients play a significant role in hair loss and growth. Lower levels of iron, zinc, and vitamin D were associated with telogen effluvium and alopecia areata, while androgenetic alopecia was linked to lower levels of iron and vitamin D. Both lower and increased levels of vitamin A could result in telogen effluvium, with lower levels also causing hair breakage. Vitamin C insufficiency was found to result in hair shaft abnormality. However, there was no data about hair loss associated with abnormal biotin levels. The study concluded that the role of micronutrients for hair follicle function was not completely understood and that treatments of hair loss with micronutrients without confirmed deficiencies had not shown utility.
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