Snoring occurs when airflow is partially blocked during sleep, leading to vibration of the soft tissues in the airway.
This blockage can happen in the nose, mouth, or throat, especially when muscles relax during deeper stages of sleep.
Some people snore occasionally, while others experience it every night. The intensity can range from soft breathing sounds to loud, disruptive noise.
Symptoms of Snoring
Common symptoms include:
- Loud or disruptive breathing sounds during sleep
- Dry mouth or sore throat upon waking
- Poor sleep quality or restless sleep
- Daytime fatigue or sleepiness
- Morning headaches
- Difficulty concentrating
- Irritability or mood changes
More concerning signs may include:
- More concerning signs may include:
- Gasping or choking during sleep
- Pauses in breathing
- Frequent awakenings
These may suggest a more serious sleep-related condition.
Some people may not realise they snore until a partner or family member notices it.
What Causes Snoring?
Several factors can contribute to snoring. In some cases, more than one factor may be involved.
1. Relaxed throat muscles
During sleep, the muscles in the mouth, tongue, and throat naturally relax. When these muscles relax too much, they may partially block the airway and cause vibration.
2. Blockage or Nasal Congestion

Conditions such as allergies, sinus infections, or deviated septum can restrict airflow through the nose.
3. Excess weight
Carrying extra weight around the neck and throat can place pressure on the airway and narrow breathing passages during sleep.
4. Sleeping position
Sleeping on the back may cause the tongue and soft tissues to fall backwards, narrowing the airway.
5. Alcohol and sedatives
Alcohol and certain medications relax the throat muscles further, increasing the likelihood of airway obstruction and snoring.
6. Smoking
Smoking may irritate and inflame the airway lining, contributing to congestion and restricted airflow.
7. Enlarged tonsils and adenoids
More common in children but can also affect adults.
8. Ageing
As people age, muscle tone in the airway may decrease, making the airway collapse more likely during sleep.
9. Obstructive sleep apnoea
Snoring may sometimes be linked to obstructive sleep apnoea, a condition where breathing repeatedly stops and starts during sleep due to airway obstruction.
Risk Factors of Snoring
Certain factors may increase the risk of developing snoring.
These include:
- Being overweight or obese
- Male gender
- Older age
- Smoking
- Alcohol consumption
- Family history of snoring
- Chronic nasal congestion
- Sleeping on the back
- Pregnancy
- Poor sleep habits
- Enlarged tonsils or adenoids
Pregnancy-related hormonal changes and weight gain may also increase the risk of snoring, particularly during the later stages of pregnancy.
How Is Snoring Diagnosed?
Doctors may assess by reviewing symptoms, sleep habits, and medical history. The evaluation may include:
1. Physical Examination
The nose, mouth, throat, and airway may be examined for signs of blockage or structural abnormalities.
2. Sleep History
Doctors may ask about sleep quality, daytime tiredness, breathing pauses, or review feedback from your bed partner.
3. Imaging Tests
In some cases, imaging studies such as X-rays, CT scans, or MRI scans may be used to assess airway structures.
4. Sleep Study
If a sleep disorder is suspected, a sleep study may be recommended. This test monitors breathing patterns, oxygen levels, heart rate, and sleep quality.
Sleep studies may be conducted at a sleep laboratory or through home-based sleep testing in suitable cases.
Treatment Options for Snoring
Treatment depends on the underlying cause and severity of snoring.
1. Lifestyle Changes
Many mild cases of snoring improve with simple lifestyle modifications.
These may include:
- Maintaining a healthy weight
- Sleeping on the side instead of the back
- Avoiding alcohol before bedtime
- Quit smoking
- Maintaining regular sleep schedules
- Treating nasal congestion or allergies
- Elevating the head slightly during sleep
2. Nasal Treatments

Saline sprays, allergy medications, or treatment for sinus conditions may help improve airflow.
3. Oral Appliances
Custom devices that help keep the airway open by repositioning the jaw or tongue.
4. Continuous Positive Airway Pressure (CPAP) Therapy
For people diagnosed with obstructive sleep apnoea, CPAP therapy may be recommended. This device delivers steady air pressure through a mask to keep the airway open during sleep.
5. Surgery
In selected cases, procedures may be recommended to correct structural airway problems.
Can Snoring Be Prevented?
Although not all cases can be prevented, certain habits may help reduce the likelihood of snoring.
Helpful strategies include:
- Maintaining a healthy weight
- Exercising regularly
- Avoiding smoking
- Limiting alcohol intake before sleep
- Managing allergies early
- Sleeping on the side
- Keeping consistent sleep routines
- Seeking treatment for nasal or sinus problems
When Should You See a Doctor?
You should consider seeing a doctor if your snoring is loud, persistent, affects your sleep quality, or is accompanied by symptoms such as choking, gasping, pauses in breathing, morning headaches, daytime fatigue, poor concentration, or irritability.
Medical attention may also be important if your snoring is affecting your partner’s sleep, worsening over time, or occurring alongside conditions such as high blood pressure, obesity, or heart disease, as these may sometimes be linked to obstructive sleep apnoea or other underlying airway and sleep related conditions.
Book an AppointmentFrequently Asked Questions (FAQ)
No. Many people snore occasionally. However, persistent or loud snoring should not be ignored.
As people age, muscle tone in the airway may decrease. This can make the airway more likely to narrow or collapse during sleep.
Yes. Sleeping on the back may worsen snoring because the tongue and soft tissues can fall backwards and narrow the airway.
If snoring is frequent, severe, or affecting your quality of life, further evaluation by an ENT specialist may be helpful. Persistent snoring especially when accompanied by choking, gasping, or daytime fatigue, may indicate an underlying condition such as obstructive sleep apnoea.
At Nobel ENT Centre, patients with snoring and sleep-related breathing issues are assessed by experienced ENT specialists including Dr Leong Hoo Kwong, Dr Annette Ang, and Dr Fung Chak Yuen.
A proper assessment can help identify the underlying cause of snoring and guide the most appropriate treatment for better sleep and overall health.
