Snoring or Sleep Apnoea? How to Tell the Difference

Medically reviewed by Dr Miriam Vassallo MD MRCP FRACP, respiratory and sleep physician, Breathe Well — 9 September 2026

Most people who snore do not have sleep apnoea. But almost everyone who has obstructive sleep apnoea snores — and the difference between the two matters, because one is a social nuisance and the other is a treatable medical condition with real consequences if it is left alone.

Here is how to tell them apart, and when it is worth getting tested.

What snoring actually is

Snoring is the sound of turbulent air moving past soft tissue at the back of the throat. When you fall asleep, the muscles holding your airway open relax. If the airway narrows enough, the tissue vibrates, and that vibration is the noise.

Plenty of things narrow the airway without anything being medically wrong: sleeping on your back, a blocked nose, alcohol in the evening, being tired enough that your muscles relax more deeply than usual. Simple snoring like this tends to be positional, comes and goes, and does not leave you exhausted the next day.

What obstructive sleep apnoea is

Obstructive sleep apnoea, or OSA, is what happens when the airway does not just narrow but closes. Breathing stops — for ten seconds, twenty, sometimes longer — until the brain registers the falling oxygen level and briefly rouses you enough to reopen the airway. That rousing is usually accompanied by a gasp or a snort.

Then you fall back asleep, and it happens again. In moderate sleep apnoea this cycle repeats fifteen to thirty times an hour, every hour, all night. Most people have no memory of any of it.

What they do notice is the consequence: sleep that never reaches the deep restorative stages, and a body that spends the night with its oxygen levels repeatedly dipping.

The differences that matter

	Simple snoring	Obstructive sleep apnoea
Sound	Steady, continuous	Interrupted by silences, then a gasp or snort
Pauses in breathing	No	Yes — witnessed by a partner
How you wake	Reasonably refreshed	Unrefreshed, often with a headache or dry mouth
Daytime sleepiness	Not typical	Common — dozing off while reading, watching TV, at traffic lights
Night-time waking	Occasional	Frequent, often needing to urinate
Position	Often only on your back	On your back, but often in other positions too
Health effects	None directly	Linked to high blood pressure, heart disease, stroke and type 2 diabetes

The single most useful clue in that table is the witnessed pause. If someone who shares your bed has watched you stop breathing, that is worth acting on regardless of anything else.

The signs people miss

Sleep apnoea does not always look like the stereotype of a large man snoring loudly.

Quiet apnoea exists. Some people have significant obstructive sleep apnoea without dramatic snoring, particularly if they sleep alone and nobody has ever commented.

It affects women differently. Women more often present with fatigue, insomnia, low mood or morning headaches rather than obvious snoring, and are consequently diagnosed later and less often.

It is not only about weight. Weight is a significant risk factor, but jaw and airway anatomy, nasal obstruction, age and family history all contribute. Plenty of people with sleep apnoea are a healthy weight.

Waking to urinate is a symptom. Repeated night-time trips to the bathroom are commonly attributed to bladder or prostate issues when the underlying cause is disrupted breathing.

A quick self-check

The questions below are drawn from a screening tool used widely in sleep medicine. Count how many apply to you:

Do you snore loudly enough to be heard through a closed door?
Do you often feel tired or sleepy during the day?
Has anyone observed you stop breathing during sleep?
Do you have or are you treated for high blood pressure?
Is your BMI over 35?
Are you over 50?
Is your neck circumference over 43 cm (men) or 41 cm (women)?
Are you male?

Three or more suggests you are at increased risk and worth testing. Five or more suggests high risk.

This is a risk indicator, not a diagnosis. Sleep apnoea can only be confirmed by a sleep study, and plenty of people who score low still have it.

How it is diagnosed

A sleep study measures what your breathing actually does overnight — how many times it stops or becomes shallow, how far your oxygen levels fall, your heart rate, and how much of the night you spend in each sleep stage.

Most people can do this at home. Our home sleep studies are set up for you to take away, used in your own bed on a normal night, and reported by a specialist physician. For people who need more detailed monitoring, an in-laboratory study is arranged instead.

The result is reported as an AHI — the average number of breathing interruptions per hour:

Under 5 — normal
5 to 15 — mild
15 to 30 — moderate
Over 30 — severe

Why it is worth doing something about it

Untreated moderate to severe sleep apnoea is associated with high blood pressure, heart arrhythmias, stroke and type 2 diabetes. It also has a more immediate cost: sustained daytime sleepiness affects concentration, mood and reaction time, and drowsy driving is a genuine risk that people consistently underestimate in themselves.

The encouraging part is that it responds well to treatment. Most people who start CPAP therapy and stay with it report the difference within a fortnight, and it is often the people who were most convinced they slept fine who notice the biggest change.

Frequently asked questions

Can you have sleep apnoea without snoring? Yes, though it is less common. Central sleep apnoea in particular may involve little or no snoring.

Does snoring always get worse over time? Not necessarily, but it commonly worsens with weight gain, age and alcohol use.

Will losing weight cure sleep apnoea? Weight loss can meaningfully reduce severity and sometimes resolves mild cases, but it is not reliable as a sole treatment for moderate or severe sleep apnoea. It is worth doing alongside treatment rather than instead of it.

Do I need a GP referral? No — you can book a sleep study with us directly. It is still worth seeing your GP first, because with a referral the study can be bulk billed. Without one there is no Medicare rebate and the study is a private cost.

How long does a home sleep study take? One night in your own bed. The equipment is collected or returned the following day.

Next steps

If you recognise yourself in the sleep apnoea column above — particularly if someone has watched you stop breathing — it is worth getting tested rather than wondering. You can read more about sleep apnoea, or book an appointment with our specialist sleep and respiratory physicians in Cleveland.

This article is general information and is not a substitute for individual medical advice. Sleep apnoea can only be diagnosed by a qualified clinician following a sleep study.

Snoring or Sleep Apnoea? How to Tell the Difference