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Can my bad breath be a sign of an illness?

RealAge
Allergy
If your bad breath is not a sign of poor oral hygiene or gum disease, it may signal a medical condition. Common ailments include respiratory tract infections, sinusitis,  bronchitis and diabetes. Bad breath may also be a warning sign of liver or kidney problems.
Bad breath may be the sign of a medical disorder, such as a local infection in the respiratory tract (nose throat, windpipe, lungs), chronic sinusitis, postnasal drip, chronic bronchitis, diabetes, gastrointestinal disturbance, liver or kidney ailment. If your dentist determines that your mouth is healthy, you may be referred to your family doctor or a specialist to determine the cause of bad breath.

Continue Learning about Bad Breath (Halitosis)

Bad Breath (Halitosis)

The easy cases of bad breath can be fixed by brushing and flossing. Drink lots of water. Use mouthwash and remember to brush your tongue too. But there are other things that can cause bad breath. Smoking is an obvious culprit. Foo...

ods like garlic and onions can cause bad breath long after you brush them out of your mouth. Dry mouth can cause bad breath, drinking plenty of water helps, as does chewing gum. Some illnesses and medicines may also cause bad breath, and plaque or tartar on teeth and gum disease may also contribute.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.