What is The Most Common Cause of Death in Sleep Apnea?

by | Mar 10, 2026 | Apnea Diagnosis Canada, Cpap Canada, CPAP for Snoring, CPAP Therapy, Diagnosis & Treatment, Health and Wellness, Obstructive Sleep Apnea, OSA, OSA Treatment, Sleep and Wellness, Sleep Therapy

Man sleeping with open mouth showing sleep apnea signs

Written By: Joshua Mari Descalso

Sleep apnea is more than just loud snoring or restless nights—it is a serious sleep disorder that can have life-threatening consequences if left untreated. Many people ask, “What is the most common cause of death in sleep apnea?” This is an important question because understanding the risks can motivate early diagnosis and treatment. In this article, we’ll explore the dangers of untreated sleep apnea, identify the most common cause of death linked to the condition, and explain how CPAP therapy, with support from CPAP Pros, can help prevent these outcomes.

Understanding Sleep Apnea

Sleep apnea occurs when breathing stops and starts repeatedly during sleep. The most common form, obstructive sleep apnea (OSA), happens when throat muscles relax and block the airway. Each pause in breathing reduces oxygen levels in the blood, which forces the brain to wake the body slightly to reopen the airway. This cycle may occur dozens or even hundreds of times per night, disrupting sleep and straining the cardiovascular system.

Over time, this constant stress on the body leads to serious complications that increase the risk of premature death.

What Is the Most Common Cause of Death in Sleep Apnea?

The leading cause of death in people with untreated sleep apnea is cardiovascular disease. When the airway collapses repeatedly during sleep, oxygen levels drop, and the body responds with surges in stress hormones like adrenaline. These repeated events contribute to high blood pressure, abnormal heart rhythms, heart attacks, and strokes.

  • Heart Attacks: Interrupted breathing and low oxygen place immense stress on the heart, making heart attacks more likely.
    Man sleeping with apnea showing risk of heart attack

    Sleep apnea may increase heart attack risk at night

     

  • Arrhythmias: Irregular heartbeats are common in sleep apnea and can trigger sudden cardiac arrest. 
  • Stroke: Oxygen deprivation and elevated blood pressure increase stroke risk. 
  • Heart Failure: Over time, the heart weakens from constant strain, leading to heart failure, one of the deadliest outcomes of sleep apnea. 

So, when people ask, “What is the most common cause of death in sleep apnea?”, the answer is clear: cardiovascular complications, particularly heart disease, top the list.

Other Life-Threatening Risks

While heart disease is the leading cause of death, untreated sleep apnea also raises the risk of:

  • Diabetes-related complications from insulin resistance 
  • Cognitive decline and dementia, due to reduced oxygen to the brain
    Man sleeping with apnea linked to cognitive decline risk

    Sleep apnea may raise risk of dementia and memory loss

     

  • Accidents caused by daytime drowsiness, including motor vehicle crashes
    Man sleeping with apnea linked to accident risk

    Sleep apnea fatigue increases accident risk daily

     

  • Weakened immune system, making the body more vulnerable to illness 

Together, these risks demonstrate why untreated sleep apnea should never be ignored.

How CPAP Therapy Saves Lives

Fortunately, effective treatment exists. CPAP (Continuous Positive Airway Pressure) therapy is the gold standard for managing sleep apnea. A CPAP machine delivers a steady stream of air through a mask, keeping the airway open throughout the night and preventing dangerous pauses in breathing.

Man sleeping with CPAP therapy for sleep apnea treatment

CPAP therapy helps manage sleep apnea during sleep

Benefits of CPAP therapy include:

  • Lowering blood pressure and reducing strain on the heart 
  • Reducing the risk of heart attack and stroke 
  • Improving daytime alertness and concentration 
  • Enhancing memory, mood, and overall mental health 
  • Restoring restful, uninterrupted sleep 

Consistent CPAP use not only improves daily quality of life but also directly lowers the risk of fatal cardiovascular events.

Why Choose CPAP Pros?

Starting CPAP therapy can feel overwhelming, but the right provider makes it much easier. CPAP Pros specializes in CPAP machines, masks, and accessories tailored to individual needs. Their expert guidance helps you find the right fit and settings, making therapy more comfortable and effective.

With strong customer support and reliable equipment, CPAP Pros ensures you stay consistent with therapy—the key to getting the full health benefits and preventing life-threatening complications.

Conclusion

So, what is the most common cause of death in sleep apnea? The answer is cardiovascular disease, including heart attacks, strokes, and heart failure, brought on by repeated drops in oxygen and stress on the heart. But this outcome is not inevitable. With proper treatment like CPAP therapy, supported by trusted providers such as CPAP Pros, the risks can be dramatically reduced. If you or someone you know struggles with sleep apnea, seeking treatment today could quite literally save a life.

 

Contact Us:

CPAP Pros is able to offer their services to you without ever having to leave your home! Our equipment can be shipped free of charge and our clinical team members are available to assist you virtually.

 

Address

#405, 625 5th Avenue

New Westminster British Columbia,

V3M 1X4

 

Contact Number

Phone: 604-229-1630

 

Fax

Phone: 1-833-490-1315

 

Email

info@cpappros.ca