Snoring Due to a Blocked Nose?

A blocked nose is one of the leading causes of snoring. This is because your nose is the most efficient breathing route, and snoring arises from inefficient breathing.

Unblocking your nose can drastically reduce your snoring, but nasal obstruction has many causes and each have different remedies.

Infection, allergies, pollution, drugs , hormones and the very shape of your nose all need consideration if you think nasal obstruction is causing your snoring.

How does nasal obstruction cause snoring?

Your nose is great, and when it’s working correctly you are unlikely to appreciate the important work it does. Whilst adding warmth and moisture to incoming air, it also uses mucus to trap harmful invaders and channels air through your upper airway efficiently and silently.

Snoring with a partially blocked nose

Trying to breathe through a blocked nose is uncomfortable. If you can just about manage it, the whistling or popping noise you get, whilst not the textbook definition of a snore, is still incredibly bothersome and would benefit from some attention.

A typical snore is still possible with a closed mouth. If you breathe through partially blocked nose, greater suction forces are created that can cause your throat to collapse and bring on snoring where your uvula and soft palate start to flap [1].

Snoring with a fully blocked nose

Usually, with a stuffy nose you simply aren’t getting enough air into your lungs through this narrowed space. This is when you need to go to breathing plan B, through the mouth.

Unfortunately, mouth breathing is a leading cause of snoring.

Opening your mouth whilst you sleep results in some changes to the shape of your airways, particularly the soft tissue “noise makers” that are responsible for snoring. Sleeping with your mouth dangling open is known to aggravate snoring for numerous reasons [2]:

  • An open mouth causes your throat to compress
  • Your tongue falls further back into your mouth
  • The open space behind your tongue and soft palate is reduced
  • Directly inhaled air vibrates the soft tissues at the back of your mouth
  • Your throat dries out from breathing in non-humidified air
  • Mouth breathing doesn’t filter allergens and bugs

What is blocking your nose?

Just as there is no single cause of snoring, many factors contribute to a blocked nose, often working in sync with each other to aggravate snoring. Check to see if you fit the profile for any of these …


The common cold is brought on by a range of viruses that attack the upper respiratory tract. This invasion coupled with your body’s own defense mechanisms cause your nose to swell and become blocked.

Remedy your cold-induced snoring with:


A leading cause of nasal obstruction and indeed snoring, is allergy, particularly dust allergies or the pollen allergy better known as hay fever. This is where your body launches into infection-fighting mode in reaction to harmless things.

As allergens get into the body mainly through the nose, this is the area that sees the most action. Heightened blood flow and release of inflammatory molecules cause your nose to become stuffy.

Snoring related to allergies can be effectively remedied using:

Environmental Irritants

Fumes from noxious chemicals, smoke (tobacco or otherwise), perfumes and even changes in temperature are some causes of non-allergic rhinitis (rhin = nose, itis = inflammation). These types of nasal blockage can be chronic, meaning it lingers for a long time and persistently recurs.

If you are exposed to these irritants on a daily basis, you may have lived with a stuffy nose for so long that you don’t even realize it anymore. Perhaps don’t even factor it in as a cause of your snoring. Think about your day to day life and the things you are exposed to, as certain occupations carry more risk of exposure to these harmful irritants.

Snoring caused by breathing bad air can be improved with the use of:


Hormones are the body’s chemical messengers. Because they travel in the blood they are capable of reaching everywhere in the body, including the nose. Hormonal fluctuations are particularly prominent during the menopause, menstruation and pregnancy.

There’s no shortage of changes that take place in the body during pregnancy, and though it may be low on your list of priorities, changes do take place in the nose. With increased blood supply to many parts of the body, up to 42% of pregnant women in their third trimester experience nasal blockage and as many as 49% snore (as opposed to 20% of the general female population) [3].

If hormonal fluctuations are responsible for your blocked nose and snoring, consider using:


An alcoholic drink before bed isn’t a great idea for restful or quiet sleep. Snoring is the result of over-relaxed muscles obstructing the airway. Being a depressant, alcohol only makes this worse. Additionally, the breakdown of alcohol in the blood produces some transitional chemicals that, before being expelled as waste, can cause nasal congestion [4].

Nasal sprays

Using nasal decongestant sprays has proven effective in reducing nasal blockage and in turn snoring. Whilst some types recommend daily use, others can start to have the opposite effect if overused causing a “rebound effect”. If you are using a nasal spray to treat your allergies, always check their instructions.


Your blocked nose can also be triggered by drugs that you may be taking regularly to treat other conditions. Medication for high blood pressure (ACE inhibitors), heart conditions (beta blockers) and simple over-the-counter pain relief (NSAIDs) can all contribute to stuffing you up.

Have a check in your medicine cupboard if you suspect that your nose is worsening your snoring. This can often be remedied with a non-medicated approach such as a nasal dilator.

Physical abnormalities

If inflammation in the nose persists, the nasal folds become damaged and cause a blockage in their own right. Small, benign tissue growths called nasal polyps can develop alongside long-standing allergies, recurring infection or bad reactions to drugs such as aspirin.

The structure of your nose is also important. People with a deviated septum are likely to suffer from nasal blockage. This is where the cartilage separating your nasal cavities is asymmetric, meaning one cavity is larger than the other, with the smaller chamber having the propensity to become blocked.

A deviated septum is often due to facial trauma, though is also associated with certain genetic disorders of connective tissue and birth defects.

Sometimes, a simple nasal dilator can be very effective at relieving snoring caused by nasal tissue abnormalities. See which ones are most suitable for you with our guide to nasal dilators.


For some, a blocked nose is the sole cause of snoring, for others, the picture is bigger. Understanding what role your nose has in snoring and identifying the cause can set you well on your way to tailoring the correct remedies to your snoring and achieving quieter nights.

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  1. Georgalas C. The role of the nose in snoring and obstructive sleep apnoea: an update. European Archives of Oto-Rhino-Laryngology 2011; 268(9): 1365-1373.
  2. Lee SH, et al. How Does Open-Mouth Breathing Influence Upper Airway Anatomy? The Laryngoscope 2007; 117: 1102-1106.
  3. Bourjeily G, et al. Pregnancy and fetal outcomes of symptoms of sleep-disordered breathing. The European Respiratory Journal 2010; 36(4): 849-855.
  4. Nihlen U, et al. Alcohol-induced upper airway symptoms: prevalence and co-morbidity. Respiratory Medicine 2005; 99(6): 762-769.

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