Snoring in Adults: When It’s Just Annoying and When It’s a Health Risk

Most people who snore don’t know they snore. They wake up feeling fine, go about their day, and the only evidence of what happened overnight is a sleep-deprived partner who’s been lying awake next to what sounds like a small generator running at full capacity.

And for a long time sometimes years, this gets filed under “just one of those things.” A nuisance. Something to manage with separate bedrooms or earplugs rather than something to investigate medically.

The problem is that snoring exists on a spectrum. At one end, it’s genuinely just noise, a minor airway vibration that disrupts the person next to you but causes no harm to the snorer. At the other end, it’s a symptom of obstructive sleep apnoea, a condition where breathing repeatedly stops and starts during sleep, with real consequences for cardiovascular health, cognitive function, and long-term wellbeing.

Knowing where on that spectrum a particular person’s snoring sits is what makes the difference between reaching for earplugs and reaching for a medical assessment.

What Actually Causes Snoring?

Snoring is produced by vibration of the soft tissues in the throat and upper airway during sleep. When awake, the muscles of the throat maintain enough tone to keep the airway open. During sleep particularly deep sleep, those muscles relax. The airway narrows. Air passing through the narrowed passage causes the surrounding tissue to vibrate, and that vibration is the sound of snoring.

The louder and more turbulent the airflow, the louder the snoring. Anything that narrows the upper airway increases the likelihood and severity of snoring.

What Narrows the Airway?

Several anatomical and lifestyle factors contribute:

Obesity – excess weight around the neck and throat is one of the most significant drivers of snoring in adults. Even a moderate increase in neck circumference compresses the upper airway significantly during sleep.

Alcohol – relaxes the throat muscles further than normal sleep does, narrowing the airway and worsening snoring. Someone who snores mildly on an average night may snore significantly after a few drinks.

Sleeping position – sleeping on the back allows the tongue and soft palate to fall backward into the airway. Side sleeping keeps them forward and reduces snoring in many people.

Nasal congestion – when the nose is blocked from allergy, sinusitis, or a deviated septum, the person breathes through their mouth. Mouth breathing bypasses the nose’s role in supporting the upper airway and worsens snoring.

Enlarged tonsils or adenoids – more commonly a cause in younger adults, but tonsil size can contribute to upper airway narrowing in adults too.

A naturally narrow airway – anatomical factors including a low, thick soft palate, an elongated uvula, or a small jaw that positions the tongue further back all contribute to a narrower-than-average upper airway.

Ageing – muscle tone throughout the body decreases with age, including in the throat. Older adults snore more than younger ones, on average.

Sedative medications – sleeping tablets, antihistamines, and other sedating medications relax throat muscles and worsen snoring.

Smoking – irritates and inflames the nasal and throat lining, causing swelling and increased mucus production that narrows the airway.

Hypothyroidism – an underactive thyroid can cause soft tissue swelling including in the throat, contributing to snoring.

When Snoring Is Just Noise

Simple snoring also called primary snoring, is snoring without significant oxygen desaturation, without breathing pauses, and without the disrupted sleep architecture of obstructive sleep apnoea.

The person who snores simply makes noise while they sleep. Their oxygen levels remain normal throughout the night. Their sleep quality, while potentially disrupted by their own snoring to some degree, isn’t significantly fragmented. They wake up feeling reasonably rested. They don’t have the daytime symptoms associated with sleep apnoea.

For these people, snoring is largely a social problem, it affects the person sleeping next to them far more than it affects them. Management is about reducing the snoring rather than treating a medical condition.

Lifestyle measures that genuinely help primary snoring:

Weight loss – even a modest reduction in weight can produce a meaningful improvement in snoring. Losing five to ten percent of body weight reduces neck circumference and opens the airway.

Avoiding alcohol close to bedtime – particularly in the two to three hours before sleep. This alone produces noticeable improvement in many snorers.

Side sleeping – positional snoring, worse on the back responds well to sleeping on the side. Various devices, wedge pillows, and the classic tennis-ball-sewn-into-the-back-of-a-pyjama-top approach all aim to prevent rolling onto the back.

Treating nasal congestion – nasal corticosteroid sprays for allergic rhinitis, nasal strips to open the nasal passages, saline rinses. If the nose is blocked, breathing improves when it’s opened.

Stopping smoking – reduces airway inflammation and swelling over time.

Mandibular advancement devices (MADs) – dental devices that hold the lower jaw slightly forward during sleep, which pulls the tongue and soft palate forward and opens the upper airway. Available in custom-fitted versions from dentists and in over-the-counter versions. Custom-fitted are more effective and comfortable. They work well for positional snoring and mild to moderate obstructive sleep apnoea.

When Snoring Becomes a Health Risk

This is the more important conversation. Snoring that’s accompanied by obstructive sleep apnoea (OSA) is not just an annoyance, it’s a medical condition with documented health consequences.

What Is Obstructive Sleep Apnoea?

In OSA, the upper airway doesn’t just narrow during sleep, it collapses completely, repeatedly, throughout the night. Each collapse causes a pause in breathing an apnoea that can last from a few seconds to over a minute. The oxygen level in the blood drops. The brain detects the oxygen deficit and sends a signal to arouse from sleep, just enough to restore muscle tone and reopen the airway, before dropping back into sleep.

This arousal is usually brief enough that the person doesn’t consciously wake up. They have no memory of it. But it disrupts the sleep cycle, preventing the deep restorative sleep stages. And it can happen dozens, sometimes hundreds of times per night.

The snoring pattern in OSA tends to be louder and more irregular than simple snoring. The pauses in breathing, followed by a gasping, choking, or snorting sound as breathing resumes are the key observable feature. Partners often notice these before the person themselves does.

The Health Consequences of Untreated OSA

This is what separates OSA from simple snoring, the downstream effects on health are well-documented and significant.

Cardiovascular disease – the repeated oxygen desaturations and arousals of OSA stress the cardiovascular system. OSA is independently associated with hypertension, atrial fibrillation, coronary artery disease, and increased risk of stroke. The mechanism involves oxidative stress, sympathetic nervous system activation, and systemic inflammation from repeated hypoxic episodes during the night.

Hypertension – OSA is one of the most common identifiable causes of resistant hypertension, high blood pressure that doesn’t respond adequately to medication. In some patients, treating OSA produces meaningful improvement in blood pressure.

Type 2 diabetes and insulin resistance – disrupted sleep and intermittent hypoxia from OSA worsen insulin sensitivity. OSA and metabolic syndrome frequently coexist and worsen each other.

Cognitive impairment – the fragmented, non-restorative sleep of OSA affects memory consolidation, concentration, and executive function. Patients with untreated OSA have measurably impaired cognitive performance. There is increasing evidence linking long-term OSA to a higher risk of dementia.

Depression and mood disorders – sleep deprivation and intermittent hypoxia affect mood regulation. Depression and anxiety are more common in people with untreated OSA, and treating OSA often produces improvement in mood alongside sleep quality.

Driving and accident risk – excessive daytime sleepiness from untreated OSA significantly increases the risk of falling asleep at the wheel. OSA is associated with a substantially higher rate of motor vehicle accidents compared to the general population. For professional drivers, this is particularly significant.

Sexual dysfunction – OSA is associated with reduced libido and erectile dysfunction in men, related to both hormonal effects of sleep deprivation and the vascular effects of intermittent hypoxia.

Signs That Snoring Has Crossed Into OSA Territory

These are the features that move snoring from “annoying” to “needs medical assessment”:

Witnessed apnoeas – a partner, family member, or anyone who has observed the person sleeping notices pauses in breathing, followed by gasping, choking, or snorting. This is the most reliable external indicator of OSA.

Excessive daytime sleepiness – falling asleep in situations where most people wouldn’t. Not just feeling tired after a poor night, actually dozing off while reading, watching television, in a meeting, or as a passenger in a car. The Epworth Sleepiness Scale is a simple questionnaire that quantifies daytime sleepiness and helps assess its severity.

Waking with a headache – morning headaches from nocturnal hypoxia are a recognised OSA symptom. The headache is typically frontal, present on waking, and resolves within a couple of hours.

Waking with a dry mouth or sore throat – mouth breathing throughout the night, common in OSA, dries out the mouth and throat.

Frequent night-time urination – nocturia is more common in OSA than generally appreciated. The mechanism involves increased atrial natriuretic peptide release from the cardiac stress of apnoeas, driving increased urine production during the night.

Unrefreshing sleep – consistently waking feeling as tired as when going to bed, despite what appears to be adequate hours of sleep. The hours of sleep are there, the quality isn’t.

Hypertension that’s hard to control – particularly morning hypertension or blood pressure that doesn’t respond well to medication.

Mood changes, irritability, or cognitive difficulties – difficulty concentrating, memory issues, or mood changes without another obvious cause, alongside snoring and daytime sleepiness.

Risk Factors for OSA

Some people are at higher risk of OSA beyond just snoring:

• Obesity – the single strongest modifiable risk factor
• Male sex – men have higher OSA prevalence than women, though the gap narrows after menopause
• Age over 40 – risk increases progressively with age
• Large neck circumference – above 40cm in women and 43cm in men is associated with higher OSA risk
• Family history – OSA has a heritable component
• Anatomical features – small jaw (retrognathia), large tongue, large tonsils, crowded oropharynx
• Hypothyroidism – undertreated hypothyroidism increases OSA risk
• Acromegaly – excess growth hormone causes soft tissue enlargement including in the airway

How Is OSA Diagnosed?

The gold standard is a polysomnography – a formal sleep study done in a sleep laboratory. Sensors monitor breathing, oxygen levels, heart rate, brain activity, eye movements, and muscle activity throughout the night. The apnoea-hypopnoea index (AHI), the number of apnoeas and hypopneas per hour of sleep quantifies the severity:

• Mild OSA – AHI 5 to 14 per hour
• Moderate OSA – AHI 15 to 29 per hour
• Severe OSA – AHI 30 or more per hour

Home sleep testing – portable devices that measure breathing, oxygen saturation, and heart rate during sleep at home, are increasingly used as a more accessible first-line investigation for patients with a high pre-test probability of OSA. They’re less comprehensive than laboratory polysomnography but adequate for diagnosing OSA in most straightforward cases.

An ENT assessment before or alongside sleep testing is valuable, identifying anatomical factors contributing to the airway narrowing guides treatment planning, particularly when surgical options are being considered.

Treatment Options for OSA

CPAP – Continuous Positive Airway Pressure

CPAP is the most effective and most studied treatment for moderate to severe OSA. A machine delivers a continuous stream of pressurised air through a mask worn during sleep. The positive pressure acts as a pneumatic splint, it keeps the upper airway open throughout the night, preventing collapse.

It’s highly effective when used consistently. Symptoms improve dramatically, daytime sleepiness, cognitive function, blood pressure, and mood often show significant improvement within weeks of starting CPAP. The challenge is adherence, some people find the mask uncomfortable or claustrophobic, and getting comfortable with CPAP takes time and adjustment. Support from a sleep specialist during this period significantly improves long-term adherence.

Mandibular Advancement Devices

Custom-fitted mandibular advancement devices, made by a dentist with experience in sleep medicine are an effective alternative for mild to moderate OSA and for patients who can’t tolerate CPAP. They hold the lower jaw slightly forward, which pulls the tongue base and soft palate forward, opening the posterior airway.

They’re less effective than CPAP for severe OSA but better tolerated, and consistent use of a MAD is more beneficial than inconsistent CPAP.

Surgical Options

Surgery for OSA is indicated when there’s a specific anatomical obstruction that’s amenable to correction, and when other treatments haven’t been effective or tolerated.

Uvulopalatopharyngoplasty (UPPP) – removes excess soft tissue from the soft palate, uvula, and throat to widen the airway. Effective for carefully selected patients but not universally curative — it works best when the site of obstruction is clearly at the palatal level.

Tonsillectomy – in adults whose OSA is driven significantly by large tonsils, tonsillectomy can produce meaningful improvement.

Septoplasty and turbinate reduction – when nasal obstruction is a significant contributing factor, surgical correction can improve CPAP tolerance and sometimes snoring severity.

Tongue base procedures – various techniques to reduce the tongue base volume or stiffen the soft palate (radiofrequency procedures, palatal implants) are used in selected cases.

Maxillomandibular advancement (MMA) – a more significant surgical procedure that moves the upper and lower jaw forward, permanently enlarging the upper airway. Highly effective for severe OSA in appropriately selected patients who haven’t responded to other treatment.

Hypoglossal nerve stimulation – an implantable device that stimulates the nerve controlling tongue movement, keeping the tongue from falling back during sleep. Used in selected patients who have failed CPAP.

Weight Loss

For obese patients with OSA, weight loss is the most directly effective long-term treatment. Significant weight loss, including through bariatric surgery in appropriate patients, can dramatically reduce or completely resolve OSA. It’s not a quick fix, but it addresses the underlying cause rather than managing the consequence.

What to Do if You or Your Partner Snores

If the snoring is primary, no witnessed breathing pauses, no daytime sleepiness, no other symptoms lifestyle modifications are a reasonable starting point. Weight management, alcohol reduction, side sleeping, and nasal treatment where applicable.

But see a doctor, ideally an ENT as a first step for the anatomical assessment if:

• There are witnessed pauses in breathing during sleep
• Daytime sleepiness is significant
• Morning headaches are occurring
• The snorer is waking feeling unrefreshed despite adequate sleep hours
• Blood pressure is difficult to control
• The snoring is extremely loud and has worsened over time
• The person is at high risk obese, male, over 40, large neck

A sleep study is the definitive investigation when OSA is suspected, but an ENT assessment is valuable alongside it to understand what anatomical factors are contributing and what treatment options are realistic.

Final Thoughts

Snoring is common. In many people, it’s nothing more than an inconvenient noise. But in a significant proportion, particularly those who are overweight, whose snoring is loud and irregular, or who have daytime symptoms, it’s a sign that the upper airway is significantly obstructed during sleep, and that the body is paying a physiological price for it throughout the night.

The distinction between simple snoring and OSA matters enormously, not just for the snorer’s sleep quality but for their long-term cardiovascular and metabolic health.

Our ENT specialist evaluates snoring and upper airway concerns in adults, assessing the anatomical factors contributing to the problem and advising on the most appropriate management, from lifestyle modification through to referral for sleep study and surgical options where relevant. If snoring has been dismissed as just a nuisance for too long, come in for an assessment. It’s worth knowing which end of the spectrum it sits at.