The Health Effects of Untreated Sleep Apnea
Obstructive sleep apnea (OSA) is more than disrupted sleep. It is a medical condition in which breathing repeatedly stops or becomes restricted during sleep.
Untreated OSA has been associated with a range of health concerns, including cardiovascular disease, metabolic conditions, daytime sleepiness, mood changes, and cognitive problems. Understanding these associations can help people recognize the importance of diagnosis, appropriate treatment, and following the treatment plan recommended by their healthcare provider.
Organizations including the American Academy of Sleep Medicine (AASM) and American Heart Association (AHA) recognize important associations between obstructive sleep apnea and cardiovascular health.
Sleep Apnea and Cardiovascular Health
During obstructive sleep apnea events, airflow becomes reduced or blocked, which can result in repeated changes in blood oxygen levels and activation of the body's sympathetic nervous system.
Over time, these physiological stresses may contribute to cardiovascular problems in some people.
High Blood Pressure
Obstructive sleep apnea is strongly associated with hypertension.
Repeated breathing interruptions during sleep can lead to fluctuations in oxygen levels, heart rate, and blood pressure. OSA is particularly common among people with difficult-to-control or resistant hypertension.
If you have both high blood pressure and symptoms of sleep apnea, discuss them with your healthcare provider.
Heart Disease and Arrhythmias
OSA has also been associated with cardiovascular disease and abnormal heart rhythms.
Research has found associations between obstructive sleep apnea and conditions such as:
- Atrial fibrillation and other arrhythmias
- Coronary artery disease
- Heart failure
- Myocardial infarction, or heart attack
Many factors contribute to an individual's cardiovascular risk, so the presence of sleep apnea does not mean that a person will develop any of these conditions.
Stroke
Obstructive sleep apnea has also been associated with an increased risk of stroke.
Possible contributing factors include changes in blood pressure, intermittent reductions in oxygen levels, inflammation, and other cardiovascular stresses associated with OSA.
Your individual stroke risk depends on many factors, including age, blood pressure, cardiovascular health, lifestyle, and medical history.
Sleep Apnea, Diabetes, and Metabolic Health
Obstructive sleep apnea is frequently associated with insulin resistance, obesity, metabolic syndrome, and Type 2 diabetes.
Sleep disruption and repeated nighttime arousals can affect processes involved in glucose regulation and metabolism. OSA and obesity also commonly occur together, which can make it difficult to separate the effects of each condition.
Research continues to examine the complex relationship between sleep apnea, insulin sensitivity, and metabolic health.
If you have diabetes or other metabolic conditions and believe you may have sleep apnea, talk with your healthcare provider.
Cognitive and Neurological Health
Sleep plays an important role in memory, concentration, and brain function. Because sleep apnea repeatedly interrupts normal sleep, people with untreated OSA may experience cognitive symptoms during the day.
Memory and Concentration
People with OSA may experience:
- Difficulty concentrating
- Problems with attention
- Forgetfulness
- Reduced alertness
- Difficulty with executive function
These symptoms may be related to sleep fragmentation, daytime sleepiness, changes in oxygen levels, or a combination of factors.
Sleep Apnea and Dementia
Research has identified associations between sleep-disordered breathing and cognitive decline, including Alzheimer's disease and vascular dementia.
However, scientists are still studying the relationship between these conditions. More research is needed to determine the underlying mechanisms and whether treating sleep apnea changes an individual's long-term dementia risk.
Sleep apnea should therefore not be described as a direct cause of Alzheimer's disease or dementia.
Mood and Emotional Health
OSA has also been associated with symptoms of depression, anxiety, irritability, and changes in mood.
Poor-quality or fragmented sleep can affect emotional regulation, concentration, and overall daytime functioning.
Mental health conditions have many potential causes, however, and anyone experiencing persistent symptoms should speak with an appropriate healthcare professional.
Daytime Sleepiness and Accident Risk
One of the most common effects of obstructive sleep apnea is excessive daytime sleepiness.
Repeated nighttime awakenings may prevent the body from maintaining normal restorative sleep, even when someone believes they slept for several hours.
Daytime sleepiness associated with OSA may contribute to:
- Difficulty concentrating at work
- Slower reaction times
- Reduced alertness
- Difficulty making decisions
- Increased risk of motor vehicle or workplace accidents
People experiencing severe daytime sleepiness or difficulty remaining alert while driving should discuss these symptoms with a healthcare provider.
Why Following Your Prescribed Treatment Matters
CPAP is an established treatment for obstructive sleep apnea.
CPAP therapy works by providing positive airway pressure to help maintain an open airway during sleep. When CPAP has been prescribed, using the device according to your healthcare provider's instructions helps manage OSA during the periods in which therapy is being used.
Research has demonstrated benefits of CPAP treatment that may include improvements in OSA symptoms, daytime sleepiness, quality of life, and, in certain populations, blood pressure.
However, the effect of CPAP treatment on long-term cardiovascular outcomes varies among individuals and across studies. CPAP should therefore not be presented as a treatment proven to prevent heart attacks, strokes, diabetes, dementia, or other systemic diseases.
Your physician or other qualified healthcare provider can determine the appropriate treatment for you based on the severity of your OSA, symptoms, medical history, and other health conditions.
Maintaining Your Prescribed CPAP Therapy Away From Home
If CPAP therapy has been prescribed for you, following your healthcare provider's treatment plan while traveling can help maintain consistency in your therapy.
Portable CPAP devices can make it easier to bring prescribed PAP therapy with you when traveling, camping, or spending time away from home.
The Transcend Micro™ Auto CPAP is a compact PAP device designed to make prescribed CPAP therapy easier to take with you when you are away from home.
Travel-Friendly Transcend Micro Features
Compact Design
The Transcend Micro's small form factor makes it convenient to pack for travel while still providing prescribed PAP therapy.
FAA Compliant
The Transcend Micro meets applicable FAA requirements for use aboard an aircraft. Airline requirements can vary, so travelers should always confirm current policies with their airline before departure.
Optional Battery Power
The Transcend Micro can be used with compatible portable power options, including the optional Transcend PowerAway™ Battery, when access to standard electrical power is limited.
Waterless Humidification Option
Compatible AirMist™ Heat and Moisture Exchanger technology provides a waterless humidification option for designated Transcend Micro configurations.
Drying Mode
The Transcend Micro includes a Drying Mode designed to help move airflow through the mask and hose after therapy to assist in clearing residual moisture.
Always use the Transcend Micro and its accessories according to the instructions in the official User Manual.
Frequently Asked Questions
Can sleep apnea cause heart disease?
Obstructive sleep apnea is associated with an increased risk of several cardiovascular conditions, including high blood pressure, atrial fibrillation, coronary artery disease, heart failure, and stroke.
Many factors influence cardiovascular health, so having OSA does not mean you will develop heart disease. Talk with your healthcare provider about your individual risk factors.
Does sleep apnea affect mental health?
OSA has been associated with depression, anxiety, irritability, and other changes in mood and daytime functioning.
Sleep apnea is not necessarily the cause of these conditions, and persistent mental health symptoms should be evaluated by an appropriate healthcare professional.
Is sleep apnea associated with dementia?
Research has identified an association between sleep-disordered breathing and cognitive decline, including Alzheimer's disease and vascular dementia.
However, more research is needed to understand this relationship and determine whether treatment of sleep apnea changes long-term dementia risk.
Does CPAP prevent heart attacks, strokes, or other health conditions?
CPAP is an established treatment for obstructive sleep apnea and helps maintain an open airway during sleep.
Studies have demonstrated benefits that can include improvements in OSA symptoms, daytime sleepiness, and, in certain populations, blood pressure.
The effect of CPAP treatment on long-term cardiovascular outcomes varies, and CPAP should not be considered a guarantee against heart attack, stroke, diabetes, dementia, or other health conditions.
Discuss your individual risks and treatment goals with your healthcare provider.
Do I need to use CPAP every night?
If CPAP has been prescribed for you, use it according to your healthcare provider's instructions.
Consistent use is generally important for controlling obstructive sleep apnea during sleep. Do not stop or modify your prescribed therapy without discussing the change with your physician or another qualified healthcare provider.
Is there a travel-sized CPAP I can use away from home?
Yes. Portable CPAP devices are available for people who have been prescribed PAP therapy.
The Transcend Micro Auto CPAP is a compact, FAA-compliant CPAP device designed to make prescribed therapy easier to take with you while traveling or spending time away from home.
Always confirm airline requirements before traveling and use the device according to your prescription and the official Transcend Micro User Manual.
When to Talk With Your Healthcare Provider
If you regularly experience symptoms that may be associated with obstructive sleep apnea, consider discussing them with a healthcare professional.
Potential symptoms can include:
- Loud or frequent snoring
- Witnessed pauses in breathing during sleep
- Waking up gasping or choking
- Excessive daytime sleepiness
- Morning headaches
- Difficulty concentrating
- Irritability or mood changes
Only a qualified healthcare professional can diagnose obstructive sleep apnea and determine the appropriate treatment.
References and Resources
For additional information about obstructive sleep apnea and its association with cardiovascular and other health conditions, consult resources from organizations such as:
- American Academy of Sleep Medicine (AASM)
- American Heart Association (AHA)
- National Heart, Lung, and Blood Institute (NHLBI/NIH)
- American Thoracic Society (ATS)
Medical research continues to evolve, and individual health risks vary. Speak with your healthcare provider about how current evidence applies to your individual situation.
Important Safety Information
In the United States, federal law restricts the Transcend Micro to sale by, or on the order of, a physician.
Use the Transcend Micro only as directed by your healthcare provider and according to the instructions provided with the device.
Refer to the official Transcend Micro User Manual for complete indications for use, contraindications, warnings, precautions, adverse effects, operating instructions, and other important safety information.
Disclaimer
This article is provided for general informational and educational purposes only and is not intended to provide medical advice, diagnosis, or treatment or to replace the advice of a physician or other qualified healthcare professional. Individual health risks and treatment needs vary. If you have symptoms of sleep apnea or concerns about cardiovascular, metabolic, neurological, mental health, or other medical conditions, consult your physician or another qualified healthcare provider.
CPAP therapy should be used according to your prescription and your healthcare provider's instructions. Do not start, stop, or modify prescribed PAP therapy or therapy settings without consulting your healthcare provider.
In the United States, federal law restricts the Transcend Micro to sale by, or on the order of, a physician. Please refer to the official Transcend Micro User Manual for indications for use, contraindications, warnings, precautions, adverse effects, operating instructions, and other important safety information.
Information regarding medical research, travel requirements, and product guidance may change over time. Always consult current manufacturer instructions and appropriate medical or regulatory resources when making healthcare or travel decisions.
