16 citations
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January 2017 in “DOAJ (DOAJ: Directory of Open Access Journals)” This study found that premature hair graying is strongly associated with a family history, Vitamin B12 deficiency, and hypothyroidism, with onset as early as 5 years in patients in Gurugram, India.
2 citations
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December 2015 in “Journal of dermatology research and therapy” This study compared serum zinc, vitamin B12, folic acid levels, iron metabolism, and thyroid function between chronic telogen effluvium patients and healthy controls, but it reports no specific clinical results.
October 2022 in “The Egyptian Journal of Hospital Medicine” This study found that thyroid dysfunctions were present in a significant number of women with diffuse hair loss, suggesting the importance of investigating thyroid functions in these patients.
September 2025 in “Cutaneous and Ocular Toxicology” In this study, researchers found no significant differences in serum levels of ferritin, folate, vitamin B12, vitamin D, or thyroid function between patients with scarring alopecia and healthy controls, suggesting these factors may not play a major role in the disease's pathogenesis.
February 2024 in “International Journal of Research in Dermatology” In this study, researchers examined thyroid function and autoantibody levels in patients with alopecia areata and vitiligo, finding similar rates of thyroid dysfunction and autoantibody presence in both groups, with no significant differences based on ethnicity or gender.