My Symptoms

Bad breath: the causes

The phenomenon of bad breath can have different causes and origins:

Bad breath "physiological":

Some factors may promote temporary halitosis, such as the consumption of certain foods (spices, tea, coffee, onions ...), or fasting.

And of course smoking, and alcohol consumption promotes bad breath for various reasons, especially because of irritation and damage to the mucous membranes.

Pathological bad breath:

- Oral origin:

In the mouth, bacteria transform certain molecules from food or saliva into malodorous metabolic compounds. Their emanation causes bad breath.

Gingivitis, periodontitis or other oral inflammations also promote bad breath.

- ENT origin:

The tonsils sometimes retain small fragments of food that macerate and cause unpleasant odors. Sinus or lung infections can also cause bad breath.

- Medications or treatment:

If you take one or more medications, by consulting the doctor or the pharmacist, you can make sure that these products do not cause bad breath, or salivation disorder that can promote bad breath, etc.

After targeted radiotherapy to the oral cavity, the patient may suffer from a lack of saliva. The destruction of the salivary glands by the rays causes dryness of the mouth, difficulties to eat and swallow, fragility of the oral mucosa and quite often bad breath. Also note that some chemotherapy drugs may cause problems in the mouth (inflammation - stomatitis).

- Other possible origins:

Certain pathologies can be at the origin of a bad breath, like:

  • diabetes,
  • kidney problems,
  • hepatitis,
  • a gastric ulcer ...

See also: our video on the origins and treatments of bad breath

Bad breath is an annoying problem that concerns many people. What are the causes ? And how to fix it? The answers in this interview with a gastroenterologist.

You want to react, to give your testimony or to ask a question? Appointment in our FORUMS Dental Health or A dentist answers you!

Read also :

> 10 bad habits that damage your teeth
> Yellow teeth: causes to solutions
> Dry mouth: it is important to know the causes!

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