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Year : 2018  |  Volume : 15  |  Issue : 1  |  Page : 23-28

Vitamin D levels in children with Hashimoto's thyroiditis: Before and after L-thyroxine therapy

1 Department of Paediatrics, Advanced Paediatrics Centre, Chandigarh, India
2 Department of Endocrinology, Postgraduate Institute of Medical Education and Research, Chandigarh, India

Correspondence Address:
Dr. Rakesh Kumar
Department of Paediatrics, Advanced Paediatrics Centre, Postgraduate Institute of Medical Education and Research, Chandigarh - 160 012
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/trp.trp_45_17

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Background: Vitamin D deficiency has been associated with Hashimoto's thyroiditis (HT). Hypothyroidism per se can cause poor absorption and metabolism of Vitamin D leading to Vitamin D deficiency. It is unknown that Vitamin D deficiency in HT is a cause or effect of HT. Objectives: To study Vitamin D level in children with newly diagnosed HT and to follow the changes in Vitamin D level after L-thyroxine therapy. Material and Methods: A prospective observational study was conducted on 35 children recently diagnosed with HT who had not received Vitamin D supplementation in the past 6 months. Serum 25 hydroxy Vitamin D levels along with serum calcium profile were estimated before starting L-thyroxine and on follow-up after 3 months. Results: The mean Vitamin D level at diagnosis of HT was significantly low as compared to controls (33.34 ± 16.93 nmol/L vs. 65.13 ± 30.57 nmol/L; P < 0.0001). Out of 22 Vitamin D-deficient patients who were treated, seven (31.8%) remained deficient at follow-up. Thirteen patients (sufficient/insufficient Vitamin D levels) who were not supplemented with Vitamin D had fall in Vitamin D levels in follow-up. Conclusions: Children with HT have low Vitamin D levels at diagnosis, and L-thyroxine therapy can further compromise Vitamin D status. Children with recent diagnosis of HT should be screened and treated or supplemented with Vitamin D.

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