Why Do We Snore? How Airflow Becomes Sound

We snore when airflow makes tissues in the upper airway vibrate during sleep. The sound can be soft, rough or intermittent. Understanding that mechanism helps explain why two people who make similar noises may need different advice.

What changes during sleep?

The muscles around the airway relax during sleep. In some people, the available space and movement of nearby tissues allow vibration as air passes through. The tongue, soft palate and surrounding anatomy can all be part of the picture.

This is not the same as choosing to breathe noisily. Nor does it mean that everyone who snores has a completely blocked airway.

Why can a blocked nose matter?

Nasal obstruction can affect breathing during the night, but the sound is not necessarily generated only inside the nose. Treating a nasal problem may address one contributor without resolving everything happening farther along the airway.

That is why “nasal spray” is too broad a description to predict what a product will do. Its ingredients, intended purpose and instructions matter.

Why does position sometimes change the sound?

Changing position can alter the relationship between tissues around the airway. Some people are noisier on their back. A positional difference is a useful observation, not proof that a pillow will resolve every breathing concern.

Why are the sounds different?

What you hear depends on several factors, including the person, their position and the recording environment. A sharp or low sound should not be used as an anatomical diagnosis.

A phone placed next to the pillow and one across the room can also produce very different recordings. Avoid comparing raw volume as though the conditions were identical.

What should you do with this information?

Describe the pattern and any accompanying symptoms. If the main issue is disturbance, agree how to protect shared sleep. If breathing interruptions or marked sleepiness are present, seek assessment.

The mechanism explains the noise. Your history and symptoms help determine what to do about it.

Keep reading

• Common contributors to snoring

Sources and further reading

• NHS: Snoring
• NHLBI: Sleep apnea causes and risk factors

Published by TannerMedico A/S, the manufacturer of Asonor. This article provides general information for adults and does not replace individual medical advice.