Mouth Breathing and Its Harmful Effects

umans primarily rely on the nose for breathing. However, certain conditions may force individuals to breathe through the mouth instead. Although mouth breathing can serve as a temporary alternative when nasal airways are blocked, it can pose numerous health risks if it becomes chronic.

So, what are the causes and complications of mouth breathing? And how can this condition be managed or prevented? We’ll answer all these questions and more in this article.

Is Mouth Breathing Ever Beneficial?

Proper breathing is essential for human health and survival. It allows the body to absorb oxygen and expel carbon dioxide efficiently.

The nose is the natural passageway for air to reach the lungs. Yet in some cases, the mouth becomes the only available alternative until the underlying issue is resolved.

Mouth breathing can also help deliver oxygen to muscles faster during physical exercise.

Nasal vs. Mouth Breathing: What’s the Difference?

The mouth lacks many of the advantages the nose offers during the breathing process. These include:

1. Cilia and filtration: The nose contains tiny hair-like structures called cilia that filter dust and pollutants from the air.
2. Air warming: Nasal passages warm the air to match body temperature, aiding in better oxygen absorption.
3. Moisturization: The nasal turbinates (curved bony structures) covered in mucous membranes help humidify the air, preventing the lungs from drying out.
4. Olfactory function: The nose can detect harmful odors, providing a protective function.
5. Nitric oxide production: The nose produces nitric oxide, which:
6. Expands blood vessels in the lungs to improve oxygen absorption.
7. Supports the immune system with antiviral, antibacterial, and antifungal properties.

Since the mouth lacks these features, it cannot perform these functions effectively and may lead to several health issues.

What Symptoms of Mouth Breathing?

Many individuals are unaware they breathe through the mouth—especially during sleep—until they experience the following symptoms:

1. Snoring
2. Dry mouth
3. Hoarseness
4. Chronic fatigue
5. Bad breath
6. Drooling on the pillow during sleep
7. Feeling tired after waking up

In children, symptoms may include:

1. Snoring
2. Enlarged tonsils
3. Slower growth
4. Cracked or dry lips
5. Frequent night crying
6. Daytime drowsiness
7. Difficulty concentrating or staying attentive

What Causes of Mouth Breathing?

Mouth breathing can affect both adults and children. Common causes include nasal obstruction or narrowed airways due to:

1. Enlarged adenoids: These are lymphatic tissues behind the nose that may block airflow when swollen.
2. Sleep apnea: A major cause of nighttime mouth breathing.
3. Nasal congestion: From colds, allergies, or sinus infections.
4. Congenital issues: Such as cleft palate.
5. Deviated nasal septum
6. Enlarged tonsils
7. Nasal tumors (benign or malignant)
8. Nasal structural abnormalities
9. Hypertrophied turbinates
10. Jaw size or shape
11. Stress and anxiety

In some cases, mouth breathing becomes a habitual behavior even after the initial cause is resolved.

How is Mouth Breathing Diagnosed?

Initial assessment helps determine whether mouth breathing is due to a medical condition—like enlarged adenoids or tonsils—or simply a behavioral habit.

Diagnostic methods include:

1. Mirror test: A mirror is placed under the nose; fogging indicates nasal breathing.
2. Water test: Assesses the patient’s ability to hold water in the mouth.
3. Closed-lip test: Evaluates the ability to breathe with lips sealed.

What are Health Risks of Mouth Breathing?

Chronic mouth breathing may lead to several complications, such as:

1. Gum inflammation
2. Facial elongation
3. Tooth decay
4. Narrow nasal passages
5. Jaw joint issues
6. Thin upper lips
7. Difficulty swallowing and speaking
8. Poor alignment of upper and lower jaws
9. Dark under-eye circles
10. Inability to close the lips completely
11. Worsening of asthma symptoms in asthmatic patients

Does Mouth Breathing Affect Facial Appearance?

Yes. In children, mouth breathing can affect the development of facial bones, causing:

1. Receding chin
2. Short upper lip
3. Forward head posture
4. Flattened nasal bridge

How to Stop Mouth Breathing?

Treatment depends on the underlying cause. Some cases can be managed with medications, while others may require surgical intervention to remove adenoids or tonsils or correct nasal deviations.

Other management options include:

1. CPAP machine: Used to treat sleep apnea by delivering continuous air pressure to keep airways open.
2. Nasal strips: Help reduce resistance and improve airflow.
3. Palatal expanders: Devices to widen the upper jaw.

What are Medications for Mouth Breathing?

Common medications include:

1. Nasal decongestant drops
2. Steroid nasal sprays
3. Antihistamines

How to Train Yourself to Breathe Through the Nose?

You can adopt certain habits to reduce mouth breathing and promote nasal breathing, such as:

1. Maintaining nasal hygiene
2. Keeping the home and environment clean
3. Practicing nasal breathing regularly
4. Using saline spray during air travel
5. Installing air purifiers in air conditioning units
6. Sleeping on your back with your head elevated
7. Using saline rinses and decongestants for allergies or colds
8. Practicing aerobic exercises, relaxation techniques like yoga and deep breathing

Final Thoughts

While mouth breathing may be unavoidable in some structural conditions involving the nose or face, it should be minimized whenever possible.

A healthy lifestyle, free from pollutants and allergens, and following medical advice based on proper diagnosis can help prevent the serious long-term health effects associated with chronic mouth breathing.

If you still need to consult a doctor regarding this condition, you can easily book an appointment through Vezeeta