Obstructive Sleep Apnea (OSA)

Obstructive sleep apnea (OSA) happens when the passage that carries air through your throat repeatedly narrows or closes during sleep. This can reduce or briefly stop airflow and prevent your body from getting enough oxygen. The National Heart, Lung, and Blood Institute explains how obstructive sleep apnea interrupts breathing.

Waking up gasping can be frightening. Trying to get through another day exhausted can be frustrating. You want answers and a treatment plan you can manage.

Whether you’re concerned about your own symptoms or someone you love, understanding testing and treatment options can help you prepare for a conversation with a healthcare professional.

What causes obstructive sleep apnea?

The shape and size of your airway, enlarged tonsils and excess tissue around the throat can contribute to blocked airflow during sleep. Body weight can play a role, but it is only one factor. Your healthcare professional can help assess which factors matter in your case. NHLBI: Sleep apnea overview

OSA differs from central sleep apnea, in which the brain does not consistently send the signals needed to breathe. A sleep evaluation helps distinguish these conditions because their treatment can differ. NHLBI: Types of sleep apnea

What sleep apnea symptoms might you or your partner notice?

Some signs happen while you’re asleep. Others affect how you feel during the day:

• Loud, frequent snoring.
• Breathing pauses noticed by another person.
• Gasping for air during sleep.
• Daytime sleepiness or fatigue.
• Morning headaches or a dry mouth.
• Difficulty concentrating or reacting quickly.

You may not remember the nighttime events that someone beside you notices. These symptoms deserve attention, but they cannot confirm a diagnosis on their own. NHLBI: Sleep apnea symptoms

Snoring alone does not establish that someone has OSA. Discuss the full pattern with a healthcare professional, including breathing pauses, sleepiness and how symptoms affect daily life. Johns Hopkins Medicine: Obstructive sleep apnea

Do not drive when you feel sleepy. Tell your clinician if sleepiness is affecting driving or other activities that require attention. NHLBI: Living with sleep apnea

How is sleep apnea diagnosed?

Your healthcare professional will ask about your symptoms, medical history and sleep habits. Information from a partner and a record of when you sleep or feel sleepy can help. A sleep study measures what happens to your breathing while you sleep. NHLBI: Diagnosis

Home testing or a sleep laboratory?

A home sleep apnea test uses equipment you wear overnight at home. Depending on the device, it records breathing, oxygen levels and other signals.

A laboratory sleep study, called polysomnography, collects more information, including brain activity used to identify sleep stages. Your clinician chooses the appropriate test based on your symptoms and health history. Home testing is suitable for selected adults, rather than every person with a possible sleep disorder. NHLBI: Diagnosis, AASM diagnostic guideline

What if a home test is negative?

A negative home test does not always settle the question. When evaluating suspected OSA, the American Academy of Sleep Medicine recommends a laboratory sleep study if the home test is negative, gives no clear answer or does not record enough reliable information.

If symptoms continue, ask what the result means and whether you need a laboratory study. AASM diagnostic guideline

What does the AHI number mean?

The apnea-hypopnea index, or AHI, counts breathing pauses and episodes of reduced breathing per hour of sleep. An AHI of 15 means an average of 15 such episodes each hour. It does not mean spending 15 minutes without breathing.

Ask your healthcare professional to explain this number alongside your symptoms and oxygen levels. The category describes part of the result; it does not determine your entire treatment plan on its own. Johns Hopkins Medicine: Diagnosis and severity

What treatments are available for obstructive sleep apnea?

Treatment depends on your test results, overall health, the shape and size of your nose, mouth and throat, and your ability to use the treatment consistently.

CPAP and other breathing devices

A continuous positive airway pressure machine, usually called CPAP, sends pressurized air through a mask to help keep your airway open during sleep.

Other devices adjust pressure automatically or provide different pressures when you breathe in and out. Your care team can explain which type fits your needs and help you get comfortable with it. American Thoracic Society: Positive airway pressure

Custom oral appliances

An oral appliance is a device worn in the mouth during sleep. Some hold the lower jaw forward to help keep the airway open.

A sleep clinician and a dentist trained in sleep-related breathing disorders can assess whether this is appropriate. A custom treatment device requires fitting and follow-up; an ordinary store-bought mouthguard is not an equivalent treatment. NHLBI: Oral devices

Sleep position and other changes

For some people, sleeping on their side can help. Weight management, physical activity and reducing alcohol may also form part of a care plan.

These measures should be discussed alongside prescribed treatment. Ask which changes are relevant to your particular sleep study and health needs. NHLBI: Treatment

Where does Zepbound fit?

Zepbound, a prescription medicine containing tirzepatide, is FDA-approved to treat moderate-to-severe obstructive sleep apnea in adults with obesity, together with a reduced-calorie diet and increased physical activity.

That approval applies to a specific group of adults. It does not mean the medicine is appropriate for every person with sleep apnea.

Common side effects include nausea, diarrhea, vomiting and constipation. Zepbound carries a boxed warning, the strongest warning the FDA requires in prescription medicine information, about thyroid tumors observed in rats. Whether this risk also exists in humans is unknown.

It must not be used by people with a personal or family history of medullary thyroid carcinoma, a particular thyroid cancer, or multiple endocrine neoplasia syndrome type 2, an inherited condition that increases certain tumor risks. Your prescriber must also review other warnings and conditions that could make the medicine unsuitable for you. Zepbound prescribing information

Ask how medication would fit your current care and how improvement would be assessed before changing prescribed breathing treatment.

Surgery and implanted devices

Selected people may be offered surgery to address a physical obstruction or an implanted device that stimulates a nerve involved in keeping the airway open.

Suitability depends on the type and severity of OSA and other assessment findings. Ask what the procedure aims to change, what risks it carries and how its effectiveness will be checked. NHLBI: Surgical treatments

What if sleep apnea treatment is difficult?

Understanding why you need treatment doesn’t make every night easy. A leaking mask, a dry mouth or a feeling of being closed in can make using a CPAP machine difficult.

Tell your care team exactly what happens: “The mask leaks when I turn over,” “I wake up with my mouth so dry it hurts,” or “I feel trapped when I put it on.” Those details give them a specific problem to address. They may recommend another mask, help you add moisture to the air from the machine or change your prescribed settings. NHLBI: Living with sleep apnea

You don’t have to wait until you feel like giving up on treatment to ask for help.

If you still feel very sleepy despite treatment, tell your healthcare professional. Fewer breathing interruptions recorded by your CPAP machine are useful information, but persistent symptoms still need attention. Your clinician can assess whether treatment is working and whether other factors are affecting your sleep. American Thoracic Society: Positive airway pressure

Questions to bring to your sleep appointment

Choose the questions that fit your situation:

• What did my sleep study show about breathing interruptions and oxygen levels?
• Does the result explain my symptoms, or do we need to investigate further?
• Why are you recommending this treatment for me?
• How will we check whether treatment is working?
• If medication is an option, what benefits, risks and costs should I understand?
• When should I contact you before the next scheduled visit?

Bring a list of your medicines, test results if you have them, and notes about what is happening during the night and day.

How can partners and family help with sleep apnea?

Start by asking what would help. That might mean going to an appointment together, writing down questions or listening when someone needs to say how frustrating this is.

Describe what you notice without blame. “I heard you gasping last night, and I’m worried” gives you a place to start the conversation. Leave room for the person to explain what they’re experiencing, too.

Sources and further reading

These resources provide additional explanations and support:

Peer communities can help you identify questions to discuss with your care team. Individual posts are personal experiences, and treatment or machine-setting advice should be checked with your clinician.

For related Taylor Tides information, explore tirzepatide, the Peptide & Biology Glossary and the Research Library.

Educational Notice: This information can help you understand sleep apnea and prepare for conversations with healthcare professionals. It cannot diagnose a sleep disorder or determine which treatment is right for you. Do not change prescribed treatment based on this information alone. Products intended exclusively for research do not replace treatment directed by a healthcare professional.

Author: TaylorTides
Medical review status: Not reviewed by a licensed clinician
Research reviewed: October 4, 2026

Your next step with obstructive sleep apnea

Bring the problem affecting you most to your next appointment, whether that is waking up gasping, struggling with treatment or feeling too tired to function. Ask: “What should we do next, and how will we know whether it’s working?”

You deserve clear answers and practical support as you work with your care team to manage obstructive sleep apnea.