Mouth Breathing vs. Nasal Breathing: Why It Matters for Long Term Health

March 20, 2026
Mouth breathing vs nasal breathing why it matters for long term health blog

Breathing is something most people rarely think about, yet the way we breathe can have a significant impact on overall health. While nasal breathing is the body’s natural and optimal method, many children and adults develop the habit of breathing through their mouths. Over time, this seemingly minor habit can contribute to a variety of concerns related to sleep, oral health, facial development, and overall wellness.

At Marvel Myo & Speech, breathing patterns are a key focus of orofacial myofunctional therapy because the muscles of the face, tongue, and airway play an important role in how we breathe, swallow, and speak. Addressing unhealthy breathing habits early can support healthier development and long term health outcomes.

Understanding the Difference Between Mouth Breathing and Nasal Breathing

Breathing through the nose, which is the ideal method, allows the air to be warmed and humidified before it reaches the bronchial passages and lungs. The nose is also a natural filtering system, as the vibrissae (nose hairs) remove dust, allergens, bacteria, and pathogens from the air. 

Mouth breathing bypasses these natural protective functions, meaning the condition of the air is less ideal for the body to process. It increases your chances of contracting contagious illnesses and developing reactions to allergens in the air. 

Why Nasal Breathing Supports Better Overall Health

Nasal breathing has many benefits over mouth breathing, such as: 

  • Oxygen intake. Breathing through the nose allows you to take in more oxygen with each breath. 
  • Sleep quality. Nasal breathing during sleep helps keep the airway open, reducing snoring and sleep apnea. 
  • Airway function. Warmed, humidified air promotes airway health and proper lung function. 
  • Speech development. Healthy tongue posture and facial muscle balance aid in speech development. 
  • Swallowing. Nasal breathing helps to develop proper swallowing technique for more effective eating and less risk of choking. 
  • Oral health. Mouth breathing can dry out the mouth, increasing the risk of tooth decay and gum disease, but nasal breathing improves oral health. 

Common Causes of Mouth Breathing in Children and Adults

Mouth breathing can affect both children and adults. Possible causes include: 

  • Allergies. Children and adults who have allergies often experience congestion that can make nasal breathing a challenge. 
  • Enlarged tonsils or adenoids. These glands at the back of the mouth near the throat can become swollen or enlarged, making nasal breathing difficult. 
  • Tongue ties. When the connective tissues between the tongue and floor of the mouth, or those that connect the lips to the gums, are too tight it can affect breathing and swallowing habits. 
  • Structural airway issues. In some cases the nasal passages are blocked due to the structure of the nose, resulting in mouth breathing habits. 

Signs That Mouth Breathing May Be Affecting Your Health

If you or your child are primarily breathing through your mouth, you may notice the following signs or symptoms: 

  • Snoring
  • Restless sleep
  • Dry mouth
  • Frequent cavities
  • Speech issues
  • Facial growth changes.

Parents might notice mouth breathing in children, but may not notice it in themselves. Seek a professional evaluation if these symptoms are present.

How Orofacial Myofunctional Therapy Helps Improve Breathing Patterns

Orofacial myofunctional therapy focuses on strengthening and retraining the muscles of the mouth and face to improve tongue posture, swallowing patterns, and breathing habits. Marvel Myo and Speech takes a personalized, holistic approach to support healthier oral function and breathing patterns. Through guided exercises and daily home practice, patients can improve their oral habits for better health and quality of life. 

Supporting Healthier Breathing for Long Term Wellness

Identifying and correcting mouth breathing habits is essential to long-term wellness. Proper breathing supports sleep, speech, airway health, facial development, and general health. But mouth breathing and related issues are not always easy to diagnose. It is best to seek a professional evaluation to determine the root cause of your breathing habits. Marvel Myo and Speech provides virtual evaluations and therapy, allowing you to get the treatment you need in the comfort of your own home. Call 469-865-8057 or contact us today to schedule a consultation. 

Frequently Asked Questions About Breathing and Myofunctional Therapy

Is mouth breathing always a problem?

Occasional mouth breathing during illness is normal, but chronic mouth breathing may signal underlying airway or muscle function issues that should be evaluated.

Can myofunctional therapy help children and adults breathe better?

Therapy can retrain oral and facial muscles to support healthier breathing, swallowing, and speech patterns for patients of all ages.

At Marvel Myo & Speech, we help children and adults improve breathing, oral function, and overall wellness through specialized orofacial myofunctional therapy. Our team focuses on identifying the root causes of issues like mouth breathing, sleep concerns, and improper tongue posture so patients can achieve healthier long term outcomes. Contact us today to learn more about how we can support your health and development.

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