How Nasal Breathing Supports Optimal Respiratory Function

Breathing is the most fundamental human function, yet many people do not breathe optimally. The nose serves as the primary breathing organ, designed to filter, humidify, and warm air before it reaches the lungs. However, nasal obstruction can limit these benefits, affecting both daily function and overall health.

The Science of Nasal Breathing

Filtering and conditioning air: The nasal passages serve as the body's first line of defence against environmental contaminants. Air passing through the nose is filtered of large particles including dust, pollen, and bacteria. The nasal cavity warms inspired air to near body temperature and increases its humidity, making it more suitable for the delicate tissues of the lungs.

Nitric oxide production: The paranasal sinuses continuously produce nitric oxide, which is inhaled into the lungs during nasal breathing. Nitric oxide functions as a potent vasodilator, improving blood flow and enhancing oxygen delivery throughout the body. Studies show that nasal breathing can increase oxygen tension by approximately 10% compared to oral breathing (Lundberg et al., 1996).

Impact on sleep: Nasal breathing during sleep is essential for maintaining proper sleep architecture and preventing sleep-disordered breathing. Research has shown that improving nasal breathing at night significantly reduces snoring and daytime tiredness while improving overall quality of life (Petruson and Löth, 1999).

Population-based research has identified nasal obstruction as a significant risk factor for sleep-disordered breathing. Individuals who frequently experience nighttime nasal congestion are substantially more likely to report habitual snoring, excessive daytime sleepiness, and non-restorative sleep (Young et al., 1997).

How Nasal Obstruction Affects Breathing

Nasal obstruction can arise from structural variations, allergic rhinitis, acute infections, or chronic inflammation. When nasal passages become restricted, individuals often compensate by mouth breathing, which bypasses the beneficial filtering, conditioning, and nitric oxide delivery functions of nasal respiration.

Studies examining artificially induced nasal obstruction have demonstrated significant effects on breathing during sleep, including increased disturbances, more frequent micro-arousals, and elevated apnoea episodes (Virkkula et al., 2003).

The Role of Nasal Tapes

Nasal tapes mechanically widen the nasal valve region, the narrowest part of the nasal airway. By gently lifting the nasal cartilages, these devices reduce nasal resistance and increase airflow capacity. Research has shown improved subjective breathing comfort and reduced nasal resistance during sleep (Dinardi et al., 2013).

For individuals who habitually breathe through their mouths due to nasal obstruction, nasal tapes offer a non-invasive method to restore nasal breathing patterns, allowing users to experience the natural benefits of nasal respiration.

References

Lundberg JO, et al. Inhalation of nasally derived nitric oxide modulates pulmonary function in humans. Acta Physiol Scand. 1996 Dec;158(4):343-7.

Petruson B, Löth S. Better quality of life when nasal breathing of snoring men is improved at night. Arch Otolaryngol Head Neck Surg. 1999 Jan;125(1):64-7.

Young T, Finn L, Palta M. Chronic nasal congestion at night is a risk factor for snoring in a population-based cohort study. Arch Intern Med. 1997 Jul 28;157(14):1746-52.

Virkkula P, et al. Nasal obstruction and sleep-disordered breathing. Acta Otolaryngol. 2003 Jun;123(5):648-54.

Dinardi RR, et al. External nasal dilators: definition, background, and current uses. Int J Gen Med. 2013 Jun 11;6:491-504.