5 doctors weighed in:
I have been having this new bad breath problem. I have never had this taste in my mouth before and my diet hasn't changed. What could have caused this?
5 doctors weighed in

Safa Lohrasbi
General Practice
3 doctors agree
In brief: Many Possibilities
Most commonly, bad breath is caused by bacteria in your mouth breaking down food.
Other causes of bad breath include everything from fungal infections to gastrointestinal diseases, diabetes, certain medications, and excess tobacco or alcohol. Consider seeing a doctor if simple treatments(chewing gum, brushing/flossing, staying hydrated, swishing water) do not help or other symptoms appear!

In brief: Many Possibilities
Most commonly, bad breath is caused by bacteria in your mouth breaking down food.
Other causes of bad breath include everything from fungal infections to gastrointestinal diseases, diabetes, certain medications, and excess tobacco or alcohol. Consider seeing a doctor if simple treatments(chewing gum, brushing/flossing, staying hydrated, swishing water) do not help or other symptoms appear!
Safa Lohrasbi
Safa Lohrasbi
Answer assisted by Safa Lohrasbi, Medical Student
Thank
1 comment
Dr. Helena Bentley
"Post nasal drip" can be a cause of bad breath as well.
Cole Livingston
Emergency Medicine
1 doctor agrees
In brief: Bacteria.
Nearly every disagreeable smell a human body can produce can be blamed on bacteria, from bad breath to foot odor. In your case, the foul taste in your mouth may be a sign of a new infection.
Make an appointment to see your dentist, so they can rule out anything serious such as an abscess. In the meantime, try washing your mouth with an anti-septic mouthwash (there are many on the market).

In brief: Bacteria.
Nearly every disagreeable smell a human body can produce can be blamed on bacteria, from bad breath to foot odor. In your case, the foul taste in your mouth may be a sign of a new infection.
Make an appointment to see your dentist, so they can rule out anything serious such as an abscess. In the meantime, try washing your mouth with an anti-septic mouthwash (there are many on the market).
Cole Livingston
Cole Livingston
Answer assisted by Cole Livingston, Medical Student
Thank
Get help from a real doctor now
Dr. Andrea Brand
Board Certified,
6M people helped
Continue
107,000 doctors available
Read more answers from doctors