Surprising Signs You May Be Vitamin D Deficient

6. Slow wound healing

A study has shown that 12 weeks of the vitamin D supplementation resulted in a significant reduction of wounds among patients with diabetic foot ulcers. Scientists believe that vitamin D had a positive effect on stabilizing blood glucose and cholesterol levels in the patients under research. If your wounds heal slowly (especially if you have diabetes), pay attention to the level of this vitamin in your body.