Understanding snoring: causes, effects, and treatments

Snoring is more than just an annoying sound at night. It occurs when airflow through the mouth, nose, or throat is partially blocked, causing surrounding tissues to vibrate. Depending on which tissue vibrates, the sound can vary: if the soft tissue at the back of the nose vibrates, the snore may sound more nasal, while vibrations of the soft palate and uvula often create louder, guttural noises. People tend to snore most during the deepest stages of sleep (around 90 minutes after drifting off) and the loudest when lying on their backs.

In this guide, Understanding snoring: causes, effects, and treatments, we’ll explore why snoring happens, how it impacts health and relationships, and the full range of solutions, from simple lifestyle changes to medical interventions. For a complete overview of sleep health, see our main guide: [The ultimate guide to getting better sleep].

Types and grades of snoring

Snoring is often categorised into three grades:

• Grade one (simple snoring): Occasional and quiet; breathing is unaffected and health risks are minimal.
• Grade two: Regular snoring (more than three nights a week). It may lead to tiredness and daytime sleepiness.
• Grade three: Loud, nightly snoring, often associated with obstructive sleep apnoea (OSA). In OSA, the airway becomes blocked for around 10 seconds, leading to repeated waking episodes. The National Institutes of Health notes OSA raises risks of cardiovascular disease, hypertension, and stroke.

The impact of snoring

Snoring isn’t just disruptive noise. It has real consequences:

• Excessive tiredness and poor concentration: The Department of Transport estimates that one in five UK road traffic accidents is linked to fatigue.
• Daytime sleepiness: Reduced alertness increases accident and injury risk.
• Relationship strain: Partners often lose sleep, leading to irritability, reduced intimacy, and conflict. Studies link habitual snoring with higher rates of marital discord.
• Health concerns: Persistent snoring may be tied to sleep apnoea, raising the likelihood of high blood pressure, heart disease, and stroke.

For more on how disrupted rest affects your body and mind, see [The ultimate guide to getting better sleep].

Causes of snoring

Understanding the triggers helps in finding the right solution:

• Obstructed nasal passages – from a deviated septum, nasal polyps, or allergies.
• Obesity – extra weight around the neck narrows the airway; research shows losing just 10% of body weight can reduce snoring significantly.
• Alcohol consumption – relaxes throat muscles, making obstruction more likely.
• Sleep position – lying on your back encourages the tongue and soft tissues to collapse into the airway.
• Age – muscle tone decreases with age, increasing vibration.
• Medical conditions – enlarged tonsils, adenoids, or sleep apnoea.

Treatments for snoring

Lifestyle changes

• Weight management: Shedding excess weight can make a noticeable difference.
• Regular exercise: Improves respiratory strength and overall health.
• Quit smoking: Reduces airway inflammation.
• Limit alcohol: Especially before bedtime.
• Adjust sleep position: Sleeping on your side helps; body pillows can assist.

Anti-snoring devices

If lifestyle adjustments aren’t enough, several devices may help:

• Nasal strips: Adhesive strips that open the nostrils.
• Nasal dilators: Small devices that keep nasal passages open.
• Chin strips: Support the mouth to prevent open-mouth snoring.
• Vestibular shield: A gum-shield-like device that redirects airflow through the nose.
• Oral appliances: Dental devices that reposition the jaw or tongue.

Medical treatments

• CPAP (continuous positive airway pressure): Effective for obstructive sleep apnoea.
• Surgery (last resort): If caused by structural problems, such as enlarged tonsils. NHS guidance notes surgery is rarely needed except in clear anatomical cases.

When to seek medical advice

Consult a healthcare professional if:

• Snoring is loud, persistent, and nightly.
• You pause, gasp, or choke during sleep.
• You experience excessive daytime sleepiness.
• You have other health issues, such as hypertension.

These may be signs of sleep apnoea, requiring medical assessment.