Mouth ulcers could signal vitamin deficiencies. Discover how your mouth might be warning you about your nutritional health.

But vitamin B12 or B9 (also known as folate) deficiency can also create ... Meanwhile, other signs of the condition take place in your mouth. A “sore or red tongue, sometimes with mouth ulcers ...

Mohr says mouth sores and related oral swelling or pain can also be signs of a folate deficiency. "Recurrent aphthous ...