TLDR People with telogen effluvium often have much lower vitamin D levels than healthy individuals.
The study conducted at Azadi Teaching Hospital in Duhok city, Kurdistan Region-Iraq, involved 100 subjects, 50 of whom had telogen effluvium and 50 were healthy controls. The results showed that patients with telogen effluvium had significantly lower levels of serum total vitamin D compared to the healthy controls. Specifically, 62% of the patients were severely deficient in vitamin D, 26% were insufficient, and only 12% had sufficient levels. The mean vitamin D level for patients was 6.93 ± 3.56, significantly lower than the mean of 21.10 ± 11.88 for healthy controls. The study concluded that there is a high prevalence rate of vitamin D deficiency among patients with telogen effluvium.
134 citations,
December 2018 in “Dermatology and Therapy” Some vitamins and minerals like vitamin D and iron can help with certain types of hair loss, but more research is needed for others.
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July 2018 in “Our Dermatology Online” Some vitamins and minerals are important for preventing hair loss, but treating hair loss with them without a known deficiency is not proven effective.
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2 citations,
July 2018 in “Elsevier eBooks” Some supplements may help with hair loss, but there's not enough strong evidence to recommend them without doctor advice.
January 2020 in “Turkiye Klinikleri Journal of Dermatology” People with chronic hair shedding had much lower vitamin D levels compared to healthy people.
January 2022 in “Indian journal of dermatopathology and diagnostic dermatology” Women with diffuse hair loss often have lower iron and vitamin D levels, but their thyroid function is typically normal.
June 2024 in “Archives of dermatological research” Dietary supplements might help prevent post-COVID hair loss, but serum ferritin is not a reliable indicator.
