Snoring And Heart Failure: Discover The Hidden Connection


Snoring is a common condition that affects nearly half of adults occasionally and up to 25% regularly. It occurs when airflow causes tissues in the throat to vibrate during sleep. While snoring may seem harmless, research shows it can have serious health implications – especially relating to heart function and heart failure risk.

In this article, we’ll explore the connection between snoring and impaired heart function, looking at the proposed mechanisms linking the two and why treating snoring may be important for cardiovascular health.

How Does Snoring Affect Heart Function?

Snoring And Heart Failure

There are a few ways in which snoring may contribute to diminished heart function:

🔹 Sleep Apnea And Low Oxygen

Frequent snoring is a primary symptom of obstructive sleep apnea, where breathing is impaired during sleep. Apnea causes brief drops in oxygen levels and arousals from sleep. Low oxygen (hypoxia) and sleep fragmentation increase sympathetic nervous system activity, which can impair heart function over time.

🔹 Inflammation

Snoring generates vibration and trauma which can trigger inflammation in the throat tissues. This pro-inflammatory response may not only impact the upper airways but also systemically, damaging blood vessels and contributing to heart disease progression. 

🔹 Blood Pressure

Snoring is linked to rises in blood pressure at night. Increased nocturnal blood pressure puts additional strain on the heart. Hypertension is a major risk factor for heart disease.

🔹 Metabolic Dysfunction

Sleep deprivation caused by snoring can lead to metabolic effects like insulin resistance and higher bad cholesterol levels, which boost heart disease risk.  

Also Check: Is Heart Attack Hereditary? Decoding The Role Of Genetics In Heart Attacks

Connection Between Snoring And Heart Failure

Heart failure is a condition where the heart cannot pump adequate blood and oxygen to meet the body’s needs. Often preceded by cardiac injury or chronic hypertension, it leads to a buildup of fluid in tissues. Heart failure is a common cause of hospitalization in older adults and the leading cause of mortality in this group. 

Several large observational studies show an association between snoring and heart failure:

  • In a major Swedish cohort study, severe snoring was linked to a doubled risk of heart failure in men.
  • A study following over 1300 participants for 15 years found self-reported heavy snoring was independently associated with heart failure incidence.
  • Even simple, self-reported snoring appears to predict heart failure, according to an American study of over 8000 older adults.
  • Analyses adjusting for confounding factors
  • like smoking, obesity, and apnea severity indicate snoring itself, not just sleep apnea, is linked to heart failure development.

The Importance Of Treating Snoring 

Connection Between Snoring And Heart Failure

Given the proposed links between snoring and heart issues like reduced heart function, hypertension, and heart failure, treating snoring may have cardiovascular benefits. Options for reducing snoring include:

  • Lifestyle changes: Losing weight, limiting alcohol, stopping smoking, and sleep positioning can help limit snoring.
  • Oral devices: Custom-fitted mouthpieces that advance the jaw can reduce throat obstruction and vibrations.
  • CPAP: Continuous positive airway pressure machines are the gold standard treatment for sleep apnea, also usually eliminating snoring.
  • Surgery: Procedures like laser-assisted uvulopalatoplasty, palatal implants, and somnoplasty stiffen throat tissues.

Read More: Is Sleeping On Your Left Side Bad For The Heart? Left Side Sleepers Alert!

Addressing snoring may be considered an important component of cardiovascular disease prevention and reducing heart failure risk. Since snoring often worsens with age, older adults should be screened for snoring and sleep-disordered breathing.

Treating snoring can improve sleep quality, oxygenation, and potentially myocardial functioning. More research is still needed to establish if snoring interventions directly lower heart failure incidence.


In summary, snoring is increasingly recognized as more than just a nuisance – it can markedly impact heart health. Through pathways like sleep apnea, inflammation, and elevated blood pressure, snoring may reduce heart function and contribute to heart failure development.

Treating snoring with lifestyle changes, oral devices, CPAP, or surgery may thus have benefits beyond noise reduction. However, large clinical trials are still needed to determine if snoring therapy can directly prevent heart failure or improve outcomes in those with heart disease. Addressing snoring offers promise as part of a comprehensive approach to maintaining cardiovascular health as we age.


Q: Is snoring always a sign of sleep apnea?

A: No, while snoring is a primary symptom of sleep apnea, many people snore without having fully diagnosed obstructive sleep apnea. However, loud and frequent snoring still represents impaired breathing during sleep and should be discussed with a doctor.

Q: Can you have sleep apnea without snoring?

A: Yes, it’s possible to have obstructive sleep apnea without snoring. Breathing pauses and obstruction can occur without the noise. Other symptoms like excessive daytime sleepiness may still indicate sleep apnea even in the absence of snoring.

Q: Is occasional snoring harmful? 

A: Infrequent, mild snoring is less likely to cause health issues. But chronic, loud snoring has been linked in studies to problems like heart disease, even when full sleep apnea is not confirmed. So persistent, disruptive snoring should still be addressed.

Q: Can treating snoring cure sleep apnea?

A: Generally not. While reducing snoring intensity can help with mild sleep apnea, for moderate or severe cases, specific sleep apnea treatment is still required. This may include CPAP therapy or oral devices to maintain the airway. Overall sleep quality may be improved by addressing snoring, but underlying apnea usually needs targeted treatment.

Q: Is snoring always dangerous?

A: No, occasional mild snoring is common and not inherently dangerous in isolation. But chronic, loud snoring potentially indicates impaired breathing during sleep. This can deprive the heart and body of adequate oxygen and disrupt sleep quality. So frequent snoring, especially with other symptoms like daytime fatigue, should be discussed with your doctor.

Dr. Jun Ren is a dedicated and experienced registered dietitian and nutritionist who is committed to helping people achieve their health goals through personalized nutrition plans. With a passion for promoting healthy eating habits and preventing chronic diseases, Dr. Ren has been able to assist numerous clients in improving their overall quality of life.

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