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Home > Patient & Family Resources > Health Library > Bad or Changed Breath
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Everybody has bad breath from time to time, especially first thing in the morning. Saliva has a cleaning action that helps reduce or get rid of bad breath. When you have less saliva, bacteria can grow, causing bad breath. The flow of saliva almost stops during sleep.
Many other things can cause bad breath, such as missing meals, being dehydrated, or eating foods with a strong odor, such as garlic. Other causes include throat or mouth infections (such as strep throat), dental problems (such as cavities), and gum disease. Bad breath can also be caused by medical problems, such as kidney disease.
Many things can cause bad breath. A major cause is decreased saliva. Saliva has a cleaning action that helps reduce or eliminate bad breath. When saliva decreases, bacteria can grow, causing bad breath.
Bad breath caused by a decrease in saliva may be especially noticeable:
Other causes of bad or changed breath include:
Mouth and throat problems that can cause mouth odor include:
Problems in other areas of the body that can cause mouth odor include:
Current as of:
October 27, 2020
Author: Healthwise StaffMedical Review: William H. Blahd Jr. MD, FACEP - Emergency MedicineAdam Husney MD - Family MedicineMartin J. Gabica MD - Family Medicine
Current as of: October 27, 2020
Author: Healthwise Staff
Medical Review:William H. Blahd Jr. MD, FACEP - Emergency Medicine & Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine
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