The paranasal sinuses also produce nitric oxide (NO), which helps kill bacteria, dilate blood vessels, and support oxygen delivery — advantages habitual does not provide.
Definition
- Respiration is involuntary; breathing route is a habit. Humans are designed to be nasal breathers.
- Chronic mouth breathing skips nasal conditioning and NO benefits while often pairing with open-mouth rest posture and low tongue position.
- Restoring a patent nasal airway (when blocked) plus Oral Rest Posture training is how the practice approaches mouth-to-nose habit change.
When to use this guide
- Use this guide when explaining to family members why "just breathe through your nose" is about physiology — not preference.
- Use it alongside facial-growth and mouth-breathing guides for a fuller airway picture.
Failure modes
- Treating NO talking points as a miracle cure claim — the brochure frames benefits of nasal breathing, not disease guarantees.
- Ignoring structural nasal blockage while expecting habit change alone.
Proof & sources
- Mouth Breathing brochure (© 2019): nasal breathing filters air and produces nitric oxide in the paranasal sinuses; low NO linked to many diseases in that educational framing.
- Practice Airway & Sleep Health page continues the nasal-breathing priority without alarmist marketing.
Breathing habits
There is a right and a wrong way to breathe — humans are designed to be nasal breathers.
Flip between modes to compare what the practice teaches about breathing habits and facial growth. Educational only — not a diagnosis.
Nasal breathing
- Filters, warms, and humidifies air before it reaches the lungs
- Supports nitric oxide (NO) produced in the paranasal sinuses
- Pairs with healthy Oral Rest Posture: lips together, tongue on the palate
- Supports healthier facial growth patterns and dental development
Action
Curious whether mouth breathing is affecting rest posture or growth? An evaluation looks at habits and airway signs together.
Common questions
What is the key takeaway from "Nitric Oxide & Why Nasal Breathing Matters"? +
Respiration is involuntary; breathing route is a habit. Humans are designed to be nasal breathers.
When should someone act on this? +
Use this guide when explaining to family members why "just breathe through your nose" is about physiology — not preference.
What can go wrong if this is ignored? +
Treating NO talking points as a miracle cure claim — the brochure frames benefits of nasal breathing, not disease guarantees.
Sources
- OMT of York brochure: Mouth Breathing (© 2019)