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Certain medical conditions, such as sinus infections, respiratory tract infections, and gastrointestinal issues, can cause chronic bad breath. A healthcare professional can help identify the underlying cause of bad breath and recommend appropriate treatment.

Bad breath, also called halitosis, can be embarrassing, especially when other people comment on it, making you feel self-conscious about talking or even smiling. But chronic bad breath can also be a sign of a larger problem. Most cases of bad breath occur after a meal with onions or other ingredients with strong odors, or after going a long time without brushing. These cases are resolved by brushing or gargling with mouthwash. Chronic halitosis, on the other hand, occurs frequently and can only be temporarily relieved with basic hygiene. This is because chronic bad breath doesn’t exist on its own; it’s often a symptom of a more serious problem and cannot be resolved without the proper treatment. Poor oral hygiene habits: infrequent brushing, not flossing and not rinsing with mouthwash can lead to excessive, odor-causing bacteria in the mouth Chronic illnesses: poorly controlled diabetes can cause a buildup of sugar, which attracts bacteria, while kidney failure can cause a fishy smell in the mouth Medications: Antidepressants, diuretics and other medications that cause dry mouth can reduce your saliva production, making it more hospitable to bacteria Gum disease or infection: whether at the gum line or in the tooth itself, periodontitis and other infections in the mouth can leave an unpleasant taste and a bad odor in your mouth What are the remedies for bad breath?
Brush your tongue, cheeks, and the roof of your mouth. Most bad breath bacteria live on the tongue. So brushing or scraping the tongue can make a big difference in your breath.