It is perfectly natural to breathe through your mouth at certain times, such as when lifting a heavy load or exercising. Breathing through the mouth most of the time, however, can cause health problems.
Mouth breathing starts when we can’t get enough air through the nose, so the mouth takes over. This forces us to breathe through the mouth out of sheer necessity, and this can become a life-long habit if not corrected.
The most common causes of mouth breathing are:
- Allergies and/or food sensitivities
- Enlarged tonsils or adenoids
- Chronic nasal congestion
- Respiratory infection
- Deviated septum
- Nasal polyps