Have you ever slept for seven or eight hours but still woke up exhausted? Does your partner complain about loud snoring, gasping, or pauses in your breathing at night? These may be signs of sleep apnea, a common sleep disorder that can affect far more than the quality of your sleep.
Sleep apnea can influence your energy, concentration, mood, blood pressure, metabolism, heart health, and overall quality of life. Because the breathing interruptions happen while you are asleep, many people have the condition for years without realizing it.
The good news is that sleep apnea can be evaluated and treated. Understanding the warning signs is the first step.
What Is Sleep Apnea?
Sleep apnea is a condition in which breathing repeatedly slows or stops during sleep. Each pause may last only a few seconds, but it can happen many times throughout the night.
When your breathing is interrupted, the oxygen level in your blood may fall. Your brain senses the problem and briefly wakes you enough to reopen your airway and breathe again. You may snort, gasp, or choke—and then fall right back to sleep without remembering it in the morning.
These repeated interruptions keep your body from staying in the deep, restorative stages of sleep it needs. Think of it like someone nudging you awake over and over all night. You may technically be in bed for eight hours, but the sleep you receive may not be refreshing.
What Are the Different Types of Sleep Apnea?
There are three main types:
Obstructive sleep apnea
Obstructive sleep apnea (OSA) is the most common type. It happens when the muscles and soft tissues in the throat relax during sleep and partially or completely block the airway.
Central sleep apnea
Central sleep apnea occurs when the brain does not consistently send the correct signals to the muscles that control breathing. It is less common and may be associated with certain heart or neurological conditions, medications, or high-altitude exposure.
Complex sleep apnea
Complex sleep apnea, sometimes called treatment-emergent central sleep apnea, involves features of both obstructive and central sleep apnea.
This article focuses mainly on obstructive sleep apnea because it is the type most people experience.
Common Signs and Symptoms of Sleep Apnea
Loud snoring is one of the best-known warning signs, but not everyone who snores has sleep apnea—and not everyone with sleep apnea realizes they snore.
Possible symptoms include:
- Loud, frequent snoring
- Pauses in breathing noticed by a partner
- Gasping, choking, or snorting during sleep
- Waking with a dry mouth or sore throat
- Morning headaches
- Restless or unrefreshing sleep
- Frequent nighttime urination
- Daytime fatigue or sleepiness
- Difficulty concentrating, forgetfulness, or “brain fog”
- Irritability, anxiety, or changes in mood
- Reduced libido or sexual difficulties
- Falling asleep while reading, watching television, working, or driving
Symptoms can look different from person to person. Some women, for example, may report fatigue, headaches, insomnia, anxiety, or mood changes rather than the classic picture of very loud snoring and obvious daytime sleepiness.
How Does Sleep Apnea Affect Your Health?
Every time the airway closes, two important things can happen: your oxygen level may drop, and your brain may briefly wake you to restart normal breathing. Night after night, this pattern can place stress on multiple systems in the body.
- Fatigue, brain fog, and poor concentration
Deep sleep helps the brain store memories, process information, regulate emotions, and recover for the next day. When sleep is repeatedly interrupted, you may feel exhausted even after spending enough time in bed.
Untreated sleep apnea may contribute to forgetfulness, slower thinking, difficulty focusing, poor work performance, and mood changes. Excessive sleepiness can also increase the risk of errors and motor vehicle or workplace accidents.
- High blood pressure and heart strain
When oxygen falls, the body releases stress hormones and activates the “fight-or-flight” response. Heart rate and blood pressure may rise as the body works to restore breathing.
Repeated episodes can make blood pressure harder to control and place additional strain on the cardiovascular system. Obstructive sleep apnea is associated with high blood pressure, abnormal heart rhythms, coronary artery disease, heart failure, heart attack, and stroke. The National Heart, Lung, and Blood Institute warns that untreated sleep apnea increases the risk of stroke, heart attack, and other serious health problems.
- Blood sugar and metabolic health
Poor-quality sleep and repeated oxygen drops can interfere with the way the body uses insulin, the hormone that helps move sugar from the bloodstream into cells. Sleep apnea is associated with insulin resistance, type 2 diabetes, and metabolic syndrome.
This relationship can become a cycle: excess weight can increase the risk of obstructive sleep apnea, while inadequate, fragmented sleep may make appetite regulation, energy, physical activity, and weight management more difficult.
Sleep apnea does not mean that a person caused the condition by gaining weight. People of any body size can have it, and factors such as airway anatomy, age, family history, hormones, and certain medical conditions also matter.
- Mood and emotional health
Consistently poor sleep can affect patience, stress tolerance, motivation, and emotional regulation. Some people with sleep apnea experience irritability, anxiety, or symptoms of depression.
These symptoms can have many causes, so sleep apnea should not automatically be assumed to be the answer. However, sleep is an important part of a complete health evaluation—especially when mood changes occur along with snoring, daytime fatigue, morning headaches, or witnessed breathing pauses.
- Hormones, libido, and sexual health
Restorative sleep supports the body’s normal hormone rhythms. Chronic sleep disruption may affect energy, libido, sexual function, and overall sense of well-being. In men, obstructive sleep apnea is also associated with erectile dysfunction and may occur alongside symptoms that resemble low testosterone.
This is one reason a provider may recommend evaluating sleep before—or while—addressing fatigue, low libido, weight concerns, or possible hormone imbalance. Treating only a laboratory number may miss an important underlying contributor.
Who Is at Risk for Obstructive Sleep Apnea?
Anyone can develop sleep apnea, including children and people who are not overweight. Risk may be higher with:
- Excess body weight or a larger neck circumference
- A naturally narrow airway, enlarged tonsils, or certain jaw or facial structures
- Increasing age
- A family history of sleep apnea
- Menopause and other hormonal changes
- Smoking
- Alcohol or sedative use, especially near bedtime
- Chronic nasal congestion
- Certain medical conditions, including high blood pressure, heart disease, diabetes, and some endocrine disorders
Being male increases the statistical risk, but women are frequently underdiagnosed—particularly before the symptoms become more obvious after menopause.
How Is Sleep Apnea Diagnosed?
A diagnosis cannot be made from snoring alone. A healthcare professional will review your symptoms, medical history, medications, risk factors, and physical findings. A bed partner’s observations can be especially helpful.
The next step may be a sleep study:
- A home sleep apnea test records breathing patterns, oxygen levels, heart rate, and other information while you sleep at home. It may be appropriate for some adults with suspected obstructive sleep apnea.
- An in-lab sleep study, or polysomnogram, collects more detailed information while you sleep at a sleep center. It may be recommended when the diagnosis is uncertain, another sleep disorder is suspected, or certain medical conditions are present.
The right test depends on the individual. A normal home test does not always rule out sleep apnea if symptoms and clinical concern remain strong.
Can Sleep Apnea Be Treated?
Yes. Treatment depends on the type and severity of sleep apnea, your anatomy, other medical conditions, and personal needs. Options may include:
- Positive airway pressure therapy: CPAP and related devices use gentle air pressure to keep the airway open during sleep.
- Oral appliance therapy: A custom dental device may reposition the lower jaw and tongue to help maintain an open airway in selected patients.
- Lifestyle changes: Weight management, regular activity, smoking cessation, avoiding alcohol or sedatives near bedtime, and sleeping on your side may help some people.
- Treatment of nasal obstruction: Managing allergies or other causes of congestion may improve airflow.
- Surgical or device-based treatment: Some patients may benefit from procedures that address airway anatomy or from an implanted nerve-stimulation device.
- Management of contributing conditions: Central sleep apnea may require a different approach, including evaluation and treatment of an underlying medical or medication-related cause.
Treatment should be individualized. Do not stop a prescribed medication or attempt to manage suspected sleep apnea on your own without speaking with a qualified healthcare professional.
When Should You Talk to a Healthcare Provider?
Consider an evaluation if you:
- Snore loudly and regularly
- Wake up choking or gasping
- Have been told that you stop breathing during sleep
- Feel persistently tired despite allowing enough time for sleep
- Wake with frequent headaches or a dry mouth
- Struggle with unexplained brain fog, mood changes, or poor concentration
- Have difficult-to-control high blood pressure
- Become sleepy while driving or during other routine activities
If you are having trouble staying awake while driving, stop driving and seek medical guidance promptly. Severe breathing difficulty, chest pain, or signs of a stroke require emergency care.
Better Sleep Is an Important Part of Better Health
Sleep apnea is not simply “bad snoring.” It is a medical condition that can repeatedly interrupt breathing, reduce oxygen, fragment sleep, and affect how you feel and function during the day. Left untreated, it is associated with serious health concerns involving the heart, brain, blood pressure, and metabolism.
If you recognize the warning signs, bring them up with a healthcare provider. At Bellus Medical in Minot, North Dakota, we look at the full picture when patients report fatigue, brain fog, hormone-related concerns, weight changes, or poor sleep. When sleep apnea is suspected, we can help discuss appropriate next steps and coordinate further evaluation when needed.
To schedule an appointment with Bellus Medical, call 701-420-2273, text 701-509-5614, or visit bellusmedicalminot.com.
This article is for general educational purposes and is not a substitute for personalized medical advice, diagnosis, or treatment.
Frequently Asked Questions About Sleep Apnea
Can you have sleep apnea without snoring?
Yes. Snoring is common with obstructive sleep apnea, but it is not present or noticed in every case. Fatigue, morning headaches, insomnia, mood changes, or witnessed breathing pauses may be clues.
Can thin or physically fit people have sleep apnea?
Yes. Body weight is only one risk factor. Airway structure, jaw position, tonsil size, nasal obstruction, age, family history, and other medical factors can contribute.
Does sleep apnea go away with weight loss?
Weight loss can reduce the severity of obstructive sleep apnea for some people, but it does not guarantee that the condition will resolve. Do not stop CPAP or another prescribed treatment without repeat evaluation and guidance from your sleep provider.
Is a CPAP machine the only treatment?
No. CPAP is effective and commonly prescribed, but other options may include an oral appliance, positional therapy, lifestyle changes, treatment of nasal obstruction, surgery, or an implantable device. The best option depends on the individual.
Can sleep apnea make it harder to lose weight?
Fragmented sleep may affect appetite, energy, insulin sensitivity, and the ability to be physically active, which can make weight management feel more difficult. However, weight is influenced by many factors, and treating sleep apnea is only one part of a comprehensive plan.
Scholarly and Authoritative Resources
- National Heart, Lung, and Blood Institute. What Is Sleep Apnea? Updated January 9, 2025.
- National Heart, Lung, and Blood Institute. Sleep Apnea: Causes and Risk Factors Updated January 9, 2025.
- Jean-Louis G, Zizi F, Clark LT, Brown CD, McFarlane SI. Obstructive Sleep Apnea and Cardiovascular Disease: Role of the Metabolic Syndrome and Its Components. Journal of Clinical Sleep Medicine. 2008;4(3):261-272.
- Xu S, Wan Y, Xu M, et al. The association between obstructive sleep apnea and metabolic syndrome: a systematic review and meta-analysis. BMC Pulmonary Medicine. 2015;15:105.
- Thareja S, Khosla S, Patil M, et al. Impact of Obstructive Sleep Apnea on Cardiovascular Health. Cureus. 2024.
Related: Primary Care in Minot, ND