Aims: Vitamin D deficiency is associated with a number of noncommunicable conditions. We conducted a randomised controlled trial to determine the effect of vitamin D supplementation on serum uric acid concentration in patients with prediabetes, in whom hyperuricaemia is common.

Methods: Seventy-one volunteers (35-80 years), with impaired fasting glucose and/or impaired glucose tolerance were randomised to three groups, vitamin D, vitamin D and control, and followed for 12 months.

Results: After 12 weeks, vitamin D supplementation was associated with a reduction in serum uric acid concentration in participants with baseline uric acid concentration > 6 mg/dL, but no significant change was observed in controls. We then assessed the dose-response relationship between vitamin D supplementation and the change in serum uric acid concentration and found that the change in serum total 25-hydroxyvitamin D did not correlate with the change in serum uric acid that occurred during vitamin D supplementation. The factors associated with larger reductions in serum uric acid were a higher baseline serum uric acid and a larger increase in serum 1,25-dihydroxyvitamin D.

Conclusions: Vitamin D supplementation lowers serum uric acid in prediabetic patients with hyperuricaemia, and supplementation might be considered to help alleviate hyperuricaemia in these patients

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8054183PMC
http://dx.doi.org/10.1016/j.jcte.2021.100255DOI Listing

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