Snoring: What are the causes and what really helps?

Around half of all adults snore occasionally, about one in five regularly - and in many Swiss bedrooms, it's the most common reason for separate beds. Snoring is not a character flaw or a matter of willpower, but a purely mechanical process in the pharynx. The crucial question is not how to drown out the sound, but why it occurs in the first place. This is because the causes range from sleeping position to a glass of wine in the evening to treatable breathing pauses. Those who know their triggers can achieve a lot with surprisingly simple means.

The short answer: Snoring occurs when the muscles in the throat relax during sleep and the breath causes the soft tissue of the soft palate, uvula, and base of the tongue to vibrate. The narrower the airway, the faster the air flows and the louder the vibration. The most important amplifying factors are sleeping on your back, alcohol in the evening, obesity, blocked nasal passages, and the natural decrease in tissue tone with age. Simple snoring is usually medically harmless but disturbs the sleep of both partners. However, if observed breathing pauses, loud gasping for air, and pronounced daytime sleepiness occur, sleep apnea should be medically investigated.

How snoring occurs in the throat

When awake, a fine muscle tension keeps the pharynx open. As soon as we fall asleep, this tonus decreases - especially strongly in the deep sleep and REM phases. The soft palate, uvula, tonsils, and base of the tongue lose their support, and the airway narrows. As air flows through this bottleneck, its speed increases, and the negative pressure sucks in the soft tissue, which then vibrates at 30 to 100 oscillations per second. This is the fluttering we hear. The volume is typically between 50 and 60 decibels, but can reach peak values of over 80 decibels - comparable to a passing truck. It is important to understand: It is not the volume that determines medical relevance, but whether the airflow remains sufficient. More information about nocturnal processes can be found in the article on sleep phases.

The most common causes at a glance

Snoring rarely has only one trigger. Usually, several factors add up until a threshold is exceeded. Lying on your back is the strongest single lever: the base of the tongue follows gravity backwards and further narrows the throat. Alcohol acts like a muscle relaxant and measurably lowers tissue tone in the throat - people often only snore after an aperitif. Obstructed nasal breathing due to a cold, polyps or a deviated septum forces mouth breathing, which makes the throat more unstable. And with increasing body weight, fatty tissue also accumulates in the neck area, which constricts the airway from the outside. The following overview shows how strongly the individual factors typically work.

Sleeping position and sleeping surface as an underestimated lever

If you only snore when lying on your back, you have by far the simplest starting point. The classic tennis ball in the back of your pyjamas actually works, but it's uncomfortable; a body pillow behind your back or a slightly raised headboard are more pleasant. Raising the upper body by about 10 to 15 degrees noticeably reduces snoring intensity for many people, because the base of the tongue sinks less far back. The sleeping surface also plays a role: if the upper body sinks too deeply into a sagging mattress, the head tips back and the throat narrows further. A pillow that is too high, on the other hand, kinks the neck forward - also unfavourable. Practical tips on this can be found in the pillow guide and the article on mattress for reducing snoring.

When snoring becomes a medical issue

The most important distinction is between simple snoring and obstructive sleep apnea. With simple snoring, tissue vibrates, but airflow is maintained. With sleep apnea, the airway repeatedly collapses completely or partially; there are breathing pauses of ten seconds or more, followed by an awakening reaction. Sufferers usually do not remember this, but wake up unrested and are extremely tired during the day. Warning signs include observed breathing stops by the partner, loud snoring with sudden interruptions and gasping for air, morning headaches, concentration problems, and drowsiness at the wheel. Since untreated sleep apnea increases the risk of high blood pressure and cardiovascular diseases, it should be medically investigated. More on this under recognizing sleep apnea and sleep and high blood pressure.

What you can try from tonight

Start with measures that cost nothing and work quickly. Forgo alcohol for three consecutive evenings and observe the difference – for many people, it is significant. Ensure a room temperature of around 16 to 18 degrees Celsius and a humidity of between 40 and 60 percent to prevent mucous membranes from drying out. If you have obstructed nasal breathing, rinse with a saline solution in the evening. Consistently train yourself to sleep on your side for at least two weeks until it becomes a habit. And maintain regular bedtimes: Overtiredness deepens sleep and further lowers muscle tone in the throat, which is why poorly slept nights are often the loudest. The article on sleep hygiene shows how to establish a stable rhythm.

Frequently asked questions about the causes of snoring

Why am I suddenly snoring when I didn't before?

Common reasons include weight gain, more alcohol in the evening, new medications with muscle-relaxing effects, a chronically blocked nose, or the natural decrease in tissue tone with age. If snoring starts abruptly and is very loud, a medical check-up is advisable.

Does sleeping on your side really help?

For many people, yes. When lying on your back, the base of the tongue sinks backwards and narrows the throat. Those who consistently lie on their side often significantly reduce the intensity of snoring. A body pillow in the back helps to maintain the position throughout the night.

Are nasal strips and anti-snoring sprays useful?

Nasal strips can help if the cause is indeed in the nose, for example with narrow nostrils. Sprays that moisturize the throat only relieve mild cases at most. For snoring from the throat or for sleep apnea, both remedies are ineffective.

Can a new mattress reduce snoring?

Indirectly, yes. A sleeping surface that supports the upper body well and makes side sleeping comfortable prevents the head from tilting back and facilitates changing position. However, it does not replace treatment if sleep apnea is present.

When should I see a doctor about snoring?

If your partner observes breathing pauses, you gasp for air at night, wake up with headaches in the morning, or are unusually tired during the day. Also, very loud snoring with an irregular pattern warrants a sleep medical evaluation.

This article is for general information and does not replace medical advice.