10 Ways Your Body Is Telling You You’re Running Low on Key Vitamins

“ Cracks and sores in your mouth “ Possible deficiency: B12 If your body needs more B12, you may notice that you're getting ulcer-like lesions in your mouth or cracks on the sides. 'I see people come in with this who have a B12 deficiency,' says Wagner. To correct that, she'll look into a possible supplement, as well as advise adding more B12 sources into the diet. Get more poultry, (lean) red meat, and eggs