Postgraduate medical journal
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To systematically review the effect of vitamin D supplementation on diabetic foot ulcer (DFU) healing. ⋯ The current evidence suggests that vitamin D supplementation can significantly promote DFU healing by lowering blood sugar and alleviating inflammation and oxidative stress. Key messages What is already known on this topic Diabetic foot ulcer (DFU) is a major complication of diabetes mellitus, with high morbidity, mortality and resource utilization. Vitamin D has the effect of lowering blood sugar, improving insulin sensitivity, and increasing anti-inflammatory response. Clinical research on vitamin D supplementation for the treatment of DFU is increasing, but due to the lack of combing and integration, the actual efficacy of vitamin D in patients is unclear. What this study adds This meta-analysis has shown that vitamin D supplementation can significantly promote DFU healing by lowering blood glucose and alleviating inflammation and oxidative stress. How this study might affect research, practice or policy This study preliminarily found the effectiveness of vitamin D supplementation on the healing of DFU, which can provide a reference for the treatment of DFU by medical staff.