What Causes Persistent Bad Breath? 12 Causes and What Helps
Quick answer: Persistent bad breath (chronic halitosis) is most often caused by bacteria in the mouth, especially on the back of the tongue and under the gums. Gum disease, cavities, dry mouth, tonsil stones and smoking are the usual culprits. Less often, the cause is a sinus, digestive or metabolic condition. If it lasts more
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