Your tongue does more than help you speak or taste food—it can also reveal important clues about your overall health. Changes in its color, texture, or appearance often reflect what’s happening inside your body. Below, we look at four common tongue symptoms, their possible causes, simple care tips, and when it’s time to see a doctor.
1. White Coating on the Tongue
Possible Cause: Oral Thrush (Candidiasis)
A white or yellowish coating on the tongue is often a sign of oral thrush, a fungal infection caused by an overgrowth of Candida albicans. This yeast naturally lives in the mouth, but certain conditions can cause it to multiply excessively.
Common Causes:
- Poor oral hygiene
- Recent antibiotic use (which disrupts healthy mouth bacteria)
- Weakened immune system (such as with diabetes or HIV/AIDS)
- Smoking or persistent dry mouth
Symptoms:
- Thick white or yellow patches on the tongue or inner cheeks
- Burning sensation or soreness
- Metallic or unpleasant taste
- Bad breath
Prevention and Home Care:
- Brush your teeth and gently clean your tongue twice a day
- Rinse your mouth with warm saltwater or a mild baking soda solution
- Avoid sugary foods and refined carbs that feed yeast
- Eat probiotic-rich foods like yogurt or kefir to restore balance
- Stay hydrated and maintain good dental hygiene
When to See a Doctor:
If the white coating lasts longer than a week or is painful, consult your dentist or doctor. Prescription antifungal medication may be needed for moderate or severe cases.
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