Analysis of Trigger Factors for Acute Telogen Hair Loss in Women of Reproductive Age

    May 2026 in “ Russian Journal of Skin and Venereal Diseases ”
    Farah Bedoui, Vladimir B. Pineguin, Varvara М. Zaitseva, Ekaterina A. Antonova, Karim Karray
    TLDR Low ferritin and vitamin D levels, past infections, stress, and weight changes can trigger hair loss in women.
    The study analyzed acute telogen effluvium in 60 women aged 18-45 in Moscow, revealing a high prevalence of ferritin (56.7%) and vitamin D (68.3%) deficiencies. Common triggers included past infections (63.3%), stress (56.7%), and weight changes (28.3%). A significant correlation was found between ferritin levels and the extent of telogen effluvium. The study highlights the importance of screening for these deficiencies in affected women, although it is limited by its small sample size and lack of a control group.
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