September 2020 in “Osmangazi tıp dergisi” This study found that vitamin D, vitamin B12, and iron deficiencies, along with thyroid dysfunction, may be associated with telogen effluvium.
This study observed that individuals with autoimmune thyroid disease in Georgia had significantly higher frequencies of certain symptoms and Anti-TPO levels compared to controls, with no significant difference in vitamin D levels.
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December 2021 in “Animals” This study concluded that thyroid atrophy, alopecia, and hyperkeratosis in sheep are associated with deficiencies in selenium and zinc in serum and liver.
November 2023 in “International Journal of Trichology” This study, conducted at a tertiary care hospital, found no statistically significant association between male pattern hair loss and levels of serum ferritin or thyroid-stimulating hormone, suggesting these factors may not play a role in this condition.
February 2019 in “Americanae (AECID Library)” This study describes cases of diffuse alopecia and thyroid alterations in sheep, linking selenium and zinc deficiencies to decreased serum T3 and T4 concentrations and related skin conditions.