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Isolated Vitamin D Deficiency is Not Associated with Nonthyroidal Illness Syndrome, but with Thyroid Autoimmunity

Overview
Publisher Wiley
Specialty Biology
Date 2015 Feb 6
PMID 25654127
Citations 12
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Abstract

Aim: This study aimed to compare thyroid functions, thyroid autoantibodies, and the existence of nonthyroidal illness syndrome (NTIS) according to vitamin D level.

Materials And Methods: The study included age- and BMI-matched healthy volunteers with and without vitamin D deficiency. In addition, the nonthyroidal illness syndrome status was evaluated.

Results: Anti-TPO positivity was significantly more common in those with severe and moderate vitamin D deficiency, as compared to those with a normal 25(OH)D level. Furthermore, TSH levels were significantly lower in those with severe and moderate vitamin D deficiency than in those with a normal 25(OH)D level. In addition, there was a significant weak inverse correlation between anti-TPO positivity and the 25(OH)D level and a positive correlation between the TSH level and 25(OH)D level. Only 1 thyroid function test result was compatible with NTIS among the participants with moderate vitamin D deficiency; therefore the difference was not significant.

Conclusions: The prevalence of thyroid autoantibody positivity was higher in those with severe and moderate vitamin D deficiency than in those with a normal 25(OH)D level. Additional large-scale studies must be conducted to determine if vitamin D deficiency plays a causal role in the pathogenesis of Hashimoto's thyroiditis and NTIS.

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Mikosch P, Aistleitner A, Oehrlein M, Trifina-Mikosch E Wien Med Wochenschr. 2021; 173(1-2):41-53.

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