What Happens If You Stop Using CPAP? Risks, Symptoms & What to Know
By Yatin J. Patel, MD · Sleep Physician
“If I feel better, can I stop using my CPAP?”
I have heard that question in my exam room for thirty years. It usually comes from someone who looks better than they did three months ago. Brighter eyes. More color. A spouse in the next chair, nodding.
Here is my honest answer. Feeling better is a good sign that your treatment is helping, but it does not mean your sleep apnea is gone. It is not evidence your sleep apnea is gone.
Those are two different things. CPAP holds your airway open while you sleep. It does not rebuild the airway. Take the pressure away, and if your sleep apnea is still present, the airway can become obstructed again during sleep.
Here is what that looks like, and what to do if you want to be done with the machine.
What Happens When You Stop Using CPAP?
Your airway doesn’t know you quit.
When you fall asleep, your throat muscles relax. In sleep apnea, the relaxed airway narrows or closes. CPAP is a gentle column of air that keeps it open. Remove the air, and if nothing else has changed, the airway starts closing again. Oxygen dips. Your brain jolts you just awake enough to breathe. You rarely remember it.
This happens fast. In a randomized trial from Zurich, 41 patients on CPAP were switched to either their real pressure or a sham setting for two weeks. In the sham group, sleep apnea came back within a few days [1]. Researchers at NYU tested patients on only the second night off CPAP. Breathing events had climbed back to roughly where they were before treatment [2].
Two nights. That’s how quickly the airway remembers.
What Symptoms May Return After Stopping CPAP?
The first report often comes from the bed partner: the snoring is back. After that, patients tell me some mix of these:
- Waking up unrefreshed, even after a full night in bed
- Morning headaches or a dry mouth
- More trips to the bathroom at night
- An afternoon fog that coffee doesn’t lift
- Dozing off while reading, watching TV, or sitting as a passenger
- A shorter fuse and a harder time concentrating
Some people notice within a night or two. Others don’t notice for weeks.
That second group matters. In the Zurich trial, sleepiness returned, yet scores on performance tests did not measurably slip over two weeks. Blood pressure, meanwhile, went up [1]. The changes you can’t feel can arrive before the ones you can.
I see this in clinic all the time. The body adapts to being tired. It forgets what rested feels like. So “I feel fine” is not a reliable test. Your machine’s data is. If you want to know what your numbers mean, read How Do I Know If My CPAP Is Working? Signs, AHI, Mask Leaks & What the Data Means.
What Are the Risks of Stopping CPAP?
I don’t want to scare you. I want you to see what your machine quietly does for you every night.
Blood pressure. In the Zurich trial, two weeks off CPAP raised morning systolic blood pressure by roughly 9 points and morning heart rate by about 6 beats per minute, compared with patients who stayed on [1]. Over the long run, the Wisconsin Sleep Cohort found that the more breathing events people had at the start, the more likely they were to have high blood pressure four years later, independent of weight, age, and other known factors [3].
The heart. A Spanish study followed men for about ten years. Men with severe untreated sleep apnea were about three times as likely as healthy men to die of a cardiovascular event. Men with sleep apnea who used CPAP had rates close to those of the healthy men [4]. It was observational and studied men only, so it shows a strong link, not proof.
The road. Pool nine studies of drivers with sleep apnea, and crash risk fell by roughly 70 percent after CPAP treatment [5]. That protection depends on using it.
The American Academy of Sleep Medicine’s review lands in the same place: compared with no treatment, positive airway pressure meaningfully reduces sleepiness, blood pressure, and motor vehicle accidents, and improves quality of life [6]. For how it works, see CPAP Therapy for Sleep Apnea: How It Works, Benefits, Side Effects & Getting Started.
| On CPAP | Off CPAP | |
|---|---|---|
| Airway during sleep | Held open | Can close again within days [1] [2] |
| Daytime sleepiness | Improves, often after the first night [5] | Returns [1] |
| Morning blood pressure | Held steady in a randomized trial [1] | Rose within two weeks |
| Drowsy-driving crash risk | About 70% lower in observational studies [5] | Protection depends on nightly use |
The good news: sleep apnea is highly treatable, and the benefits start the night you use the machine.
My book, CPAP Is Sexy, is about what’s waiting on the other side of the mask: the energy, the presence, the person you used to be. Read the first chapter free at dryatinjpatel.com/chapter1.
What If You Skip CPAP for One Night?
Relax. One missed night is not the same as stopping treatment.
If your sleep apnea is still present, breathing disruptions can return when you sleep without CPAP. You may snore, sleep lighter, and wake up heavier. Be honest about drowsiness the next day, especially behind the wheel.
Then put the mask back on. Some benefits of CPAP can return quickly when you resume treatment, although this can vary from person to person. Daytime sleepiness improves after a single night of treatment [5].
What I ask of patients: don’t let one night become a habit. Pack the machine when you travel. And the nights you most want to skip, after a late dinner and a couple of drinks, are the nights your airway needs the help most. Alcohol relaxes those same throat muscles.
Can You Stop CPAP If You Feel Better?
Think of your glasses. You put them on and the world is sharp. Nobody takes that as proof their eyes have healed.
CPAP works the same way. Feeling better means the treatment is doing its job. The airway underneath is usually the same one you had the night of your sleep study.
So the decision to stop should rest on your diagnosis, a fresh look at your sleep, and a conversation with your sleep physician. Not on a good month.
Do You Have to Use CPAP Forever?
Not necessarily. The honest answer depends on why you have sleep apnea and whether that has changed.
A few things can change the picture:
- Weight loss. In the Wisconsin cohort, a 10 percent weight loss was linked to about a quarter drop in the apnea-hypopnea index [7]. That helps meaningfully, though it rarely resolves apnea on its own. And for many people, weight was never the main driver.
- Newer medications. In two randomized trials of adults with obesity and moderate-to-severe sleep apnea, tirzepatide cut breathing events by roughly half over a year [8].
- Other treatments. Some patients do well with an oral appliance, positional therapy, surgery, or a nerve stimulator. Each fits some patients, not all.
- Age and time. Apnea can also get worse over the years.
When something changes, my rule is simple: retest, don’t unplug. Your sleep physician can determine whether repeat testing or another clinical reassessment is needed before changing your treatment plan. For many people, CPAP stays a long-term partner. For some, the plan gets adjusted. That call belongs to you and your sleep physician, together.
What Should You Do If You Want to Stop CPAP?
Tell your sleep physician the real reason. After thirty years, I’ve heard all of them. The mask leaks. My mouth is dry. It’s loud. I feel trapped. I travel too much. I’m just tired of it.
Almost every one of those is solvable. The AASM review found that nasal masks are linked to better use than full-face masks, and heated humidification reduces some common side effects [6]. A different mask, a humidity change, or a pressure adjustment made by your care team often turns “I quit” into “I forgot it was there.”
Please don’t taper, change your settings, or stop on your own. I would much rather fix the reason than lose the treatment. If comfort or equipment is the problem, start with 10 Common CPAP Problems and Solutions.
When Should You Talk to Your Sleep Physician?
Call your sleep physician if:
- Your symptoms are coming back, even while you use CPAP
- You’re struggling to use it most nights
- Your machine’s data shows frequent events or big mask leaks
- You’ve gained or lost a significant amount of weight
- You want to stop therapy, for any reason
Treatment decisions should follow your diagnosis, your symptoms, and a clinical assessment.
Medical disclaimer: This article is for general educational purposes and is not a substitute for personalized medical advice, diagnosis, or treatment. Do not stop or change prescribed CPAP therapy without discussing it with your sleep physician or healthcare provider.
FAQs About Stopping CPAP
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Can I stop using CPAP if I feel better?
Feeling better usually means CPAP is working, not that sleep apnea is gone. Talk with your sleep physician before stopping. A repeat sleep study may be the right next step.
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What happens if I don't use CPAP for one night?
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Can sleep apnea come back after stopping CPAP?
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Is it safe to stop CPAP?
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Do you have to use CPAP forever?
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Can you sleep without CPAP?
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What should I do if I don't want to use CPAP anymore?
References
- Kohler M, Stoewhas AC, Ayers L, Senn O, Bloch KE, Russi EW, Stradling JR. Effects of continuous positive airway pressure therapy withdrawal in patients with obstructive sleep apnea: a randomized controlled trial. Am J Respir Crit Care Med. 2011;184(10):1192-1199. doi:10.1164/rccm.201106-0964OC
- Young LR, Taxin ZH, Norman RG, Walsleben JA, Rapoport DM, Ayappa I. Response to CPAP withdrawal in patients with mild versus severe obstructive sleep apnea/hypopnea syndrome. Sleep. 2013;36(3):405-412. doi:10.5665/sleep.2460
- Peppard PE, Young T, Palta M, Skatrud J. Prospective study of the association between sleep-disordered breathing and hypertension. N Engl J Med. 2000;342(19):1378-1384. doi:10.1056/NEJM200005113421901
- Marin JM, Carrizo SJ, Vicente E, Agusti AG. Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study. Lancet. 2005;365(9464):1046-1053. doi:10.1016/S0140-6736(05)71141-7
- Tregear S, Reston J, Schoelles K, Phillips B. Continuous positive airway pressure reduces risk of motor vehicle crash among drivers with obstructive sleep apnea: systematic review and meta-analysis. Sleep. 2010;33(10):1373-1380. doi:10.1093/sleep/33.10.1373
- Patil SP, Ayappa IA, Caples SM, Kimoff RJ, Patel SR, Harrod CG. Treatment of adult obstructive sleep apnea with positive airway pressure: an American Academy of Sleep Medicine systematic review, meta-analysis, and GRADE assessment. J Clin Sleep Med. 2019;15(2):301-334. doi:10.5664/jcsm.7638
- Peppard PE, Young T, Palta M, Dempsey J, Skatrud J. Longitudinal study of moderate weight change and sleep-disordered breathing. JAMA. 2000;284(23):3015-3021. doi:10.1001/jama.284.23.3015
- Malhotra A, Grunstein RR, Fietze I, et al. Tirzepatide for the treatment of obstructive sleep apnea and obesity. N Engl J Med. 2024;391(13):1193-1205. doi:10.1056/NEJMoa2404881
