
16. Mouth ulcers might be a lack of vitamins and minerals.
If you are experiencing mouth pains, it may be due to insufficient specific vitamins or minerals in your diet. Mouth ulcers, also known as canker sores, may result from vitamin deficiencies of iron or B vitamins (via Healthline). Research has found that these lesions appear twice as likely in patients with low amounts of iron in their blood levels.
You may also develop a condition that causes the corners of the mouth to crack, split or even bleed, and this can cause excess salivation or dehydration. If you notice some kinds of sores develop in or near your mouth, you may want to add more iron and B vitamins foods and see if you start feeling better (via Hopkins Medicine). These foods include poultry, meat, legumes, fish, dark leafy greens, seeds, nuts, and whole grains.