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      How Coronavirus Disease 2019 Vaccination Affects the Level of Vitamin D in Serum and Hair

      research How coronavirus disease 2019 vaccination affect the level of vitamin D in serum and hair?

      January 2025 in “Egyptian Journal of Dermatology and Venerology”
      This study found that COVID-19 vaccination initially lowered vitamin D levels in serum and hair but increased serum levels after the second dose, except for the Pfizer group. Hair vitamin D showed a nonsignificant increase, and hair loss was most common with the AstraZeneca vaccine.

      research The hair cycle and Vitamin D receptor

      50 citations , October 2011 in “Archives of Biochemistry and Biophysics”
      This study found that while calcium can substitute for the Vitamin D receptor in maintaining epidermal keratinocyte differentiation, it cannot compensate for hair follicle dysfunction caused by the absence of the receptor.

      research Serum levels of vitamin D3 in patients with hair loss

      July 2016 in “Journal of Dermatology and Cosmetic”
      This study found that 66% of patients with hair loss also have vitamin D deficiency, with a significantly higher prevalence among women than men.

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