How to stop snoring: what actually helps, and what to rule out.

Snoring is the sound of air forcing its way through a narrowed upper airway. The tissues of the throat, soft palate and nose vibrate as you breathe, and the narrower the passage, the louder the noise. Almost everyone snores occasionally; for a large number of adults it happens most nights.

Start with what narrows the airway

Most snoring has a mechanical explanation. Sleeping on your back allows the tongue and soft palate to fall backwards. A blocked nose forces mouth breathing, which makes vibration more likely. Alcohol in the evening relaxes the muscles that hold the airway open. Extra weight around the neck reduces the space available. Smoking irritates and swells the lining of the airway.

Changes that are worth trying

Side sleeping is the single most effective change for many people, and a firm pillow behind the back or a body pillow makes it easier to maintain. Clearing nasal congestion — treating allergy, rinsing with saline, or using nasal strips to hold the nostrils open — restores nose breathing. Avoiding alcohol in the three to four hours before bed, keeping a consistent bedtime, and losing a modest amount of weight where relevant all reduce snoring in a measurable way.

If snoring persists and is driven by the jaw or tongue position, a dentist or sleep clinician can fit a mandibular advancement device — a custom mouthpiece that holds the lower jaw slightly forward. Over-the-counter versions exist, but a fitted device is more comfortable and more likely to be worn.

When snoring is a medical signal

Snoring on its own is not dangerous. It becomes important when it comes with witnessed pauses in breathing, gasping or choking during sleep, morning headaches, blood pressure that is hard to control, or daytime sleepiness. Those patterns point towards obstructive sleep apnoea — written sleep apnea in many search results — where the airway repeatedly closes rather than simply narrowing.

Sleep apnoea cannot be diagnosed by how loud the snoring is. It needs a recording of your breathing overnight. A home sleep test is a practical first step: a small reusable sensor, one night in your own bed, clinician review of the trace, and a phone call explaining the result and what to do next.

If you have tried the changes above and the snoring has not improved, or if anyone has noticed you stop breathing, testing is more useful than another remedy.