Vitamin D deficiency: Is it a risk factor for recurrent aphthous stomatitis?

Researchers in this study wanted to see if people with learning disabilities had higher levels of vitamin D deficiency than the general population

This review of a possible association between vitamin D deficiency and recurrent aphthous stomatitis (RAS) included 5 case control studies providing limited evidence that low levels of serum vitamin D might be a risk factor for RAS.