Sleep Apnea: Signs You Might Have It and Why It Matters
The clearest signs of sleep apnea happen while you sleep: loud snoring, pauses in breathing, gasping. Learn the signs, who notices them, and how it's tested.
CLINICAL TAKEAWAY
Loud snoring, pauses or gasping at night, and daytime sleepiness are the signs that matter most.³ ⁶ Together, they are a good reason to ask your doctor about a sleep test.
A questionnaire can flag risk, but only a sleep study can confirm sleep apnea.³ Many people can do that test at home.² ³
Treatment usually eases daytime sleepiness, but trials have not shown that it lowers the risk of death.⁵ ⁶ Feeling and working better is the main reason to treat it.
IN 30 SECONDS…
The clearest signs of sleep apnea happen while you sleep.⁷ You may not know you have them until someone tells you.⁷ A bed partner may hear loud snoring, pauses in breathing, or gasping.⁷ You may just wake up tired. A sleep test, not a quiz, is how doctors confirm it.³
What Do Doctors Want You to Understand?
Good sleep habits help most people sleep better, and our guide to evidence-based sleep hygiene habits covers them. But no habit can fix an airway that closes while you sleep.
In obstructive sleep apnea, something blocks the upper airway during sleep, for example when the tongue falls backward.⁸ This happens again and again through the night. Each time, oxygen dips and sleep is broken up.⁴
That is the core problem doctors see. The main signs show up at night, when you can't notice them. The signs you can notice, like feeling tired, are easy to blame on a busy life.
Sleep apnea is common. As many as 34% of men and 17% of women in the United States may have it.⁶ Rates differ by race or ethnicity, sex, and weight.⁴ It is also often missed, even in people with heart disease.⁴
Why does it matter? Untreated sleep apnea is linked to heart disease, stroke, type 2 diabetes, memory and thinking problems, and car crashes.¹ It is especially common in people with high blood pressure, heart failure, atrial fibrillation (an irregular heartbeat), or stroke.⁴
What this means for you: "linked to" isn't the same as "caused by." The clearest benefit of finding sleep apnea is feeling better. Treatment eases daytime sleepiness and improves quality of life.⁵ It lowers blood pressure a little, about 2 to 3 mm Hg.⁵ But trials have not shown that it lowers the risk of death, heart events, or car crashes.⁵ ⁶
What Are the Signs, and Who Notices Them?
While you sleep, someone else may notice:⁷
Breathing that stops and starts
Frequent loud snoring
Gasping for air
During the day, you may notice:⁷
Sleepiness or tiredness that makes it hard to focus or react
A dry mouth or a headache
Waking often at night to urinate
Less interest in sex
Sleep that does not feel refreshing, no matter how long you sleep, is another common sign.¹
In women, the signs can look different. Fatigue, headaches, and trouble sleeping (insomnia) are more common in women with sleep apnea.⁷ If poor sleep is your main problem, our guide to insomnia can help you sort out what is going on.
Some things raise the odds of sleep apnea:⁸
Getting older
Having obesity
A large neck, tongue, or tonsils
A family history of sleep apnea
Being male
Drinking alcohol or smoking
No single sign settles it. Doctors look at the whole pattern.
What Does This Mean for You?
If you have no signs at all, experts have not found enough evidence to say whether screening helps.¹ That advice does not apply once you have signs or concerns.¹
If you do have signs, tell your doctor. If someone has watched you sleep, bring what they saw.
Your doctor may start with a short questionnaire. One common tool is called STOP, which stands for Snoring, Tiredness, Observed apnea, and high blood Pressure.² A questionnaire can show who needs a closer look. But sleep experts say it should not be used to diagnose sleep apnea without a sleep study.³
A sleep study can be done in a sleep lab or at home.² Home testing is a useful option for many adults with clear signs and no serious heart or lung disease.⁶ A lab study, called polysomnography, may be needed if a home test is unclear.³
If a test confirms sleep apnea, the usual first treatment for adults is positive airway pressure (PAP), worn through a mask at night.⁶ Weight loss helps as an add-on to treatment.⁶ For people who cannot use PAP, there are other options, such as a mouth device or surgery.⁶
WHAT YOUR DOCTOR IS LOOKING FOR
Your doctor will ask about snoring, pauses in breathing, choking or gasping, restless sleep, and how sleepy you feel.³ Sleep experts look for daytime sleepiness plus two of three things: loud snoring most nights, pauses or gasping that someone has seen, or high blood pressure.³ That mix points to a higher risk of moderate to severe sleep apnea.³ Heart experts also advise checking for sleep apnea when high blood pressure is hard to control.⁴ The same goes for atrial fibrillation that keeps coming back after treatment.⁴ Your doctor may also ask about drowsy driving, since sleep apnea is linked to car crashes.¹
Common Questions
Is snoring always a sign of sleep apnea?
Not by itself. Snoring is one sign, and doctors weigh it together with others.³ Loud snoring that comes with gasping, choking, or daytime sleepiness is the pattern that should prompt a closer look.⁶ If someone has seen you stop breathing in your sleep, mention it to your doctor, even if you feel fine.
Can I have sleep apnea and not feel tired?
Yes, it's possible. A sleep study can confirm sleep apnea even without symptoms if breathing stops or slows often enough.⁶ Doctors use more than 15 events an hour without symptoms, or more than 5 with symptoms.⁶ How you feel during the day is only part of the picture.
Can I do a sleep test at home?
Often, yes. Guidelines accept a home sleep test for otherwise healthy adults whose signs point to moderate to severe sleep apnea.³ It records your breathing over at least one night.³ If the home test is negative or unclear, a lab study is the next step.³ A lab study is usually better if you have serious heart or lung disease.³
Does treating sleep apnea lower my risk of heart attack or stroke?
That hasn't been shown. Untreated sleep apnea is linked to heart disease and stroke.¹ But trials have not found that treatment lowers the risk of heart events or death.⁵ ⁶ What treatment does do is ease daytime sleepiness and improve quality of life.⁵ It also lowers blood pressure slightly.⁵ For many people, feeling more alert each day is reason enough.
Can losing weight help sleep apnea?
It can help, especially when extra weight is part of the cause. Extra fat in the neck can block the upper airway.⁸ Guidelines suggest weight management for people with overweight or obesity, together with other sleep apnea treatment.² Doctors see weight loss as a helpful add-on to other treatment.⁶
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The clearest signs of sleep apnea happen while you sleep: loud snoring, pauses in breathing, gasping. Learn the signs, who notices them, and how it's tested.
Clinical Sources & Citations
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