Snoring & OSA

5 Signs You Need to Have a Sleep Study Performed

October 3, 2022
Woman sleeping on bed Doctor Gan ENT

How many times do you hit the snooze button or find yourself having to down cups of coffee to stay alert throughout the day? Feeling constantly exhausted and never well-rested is not normal – you could be suffering from conditions that are affecting your quality of sleep.

This is where a sleep study comes in – it is a type of diagnostic tool used by sleep specialists to determine the causes holding you back from a good night’s rest.

Here is everything you need to know about a sleep study and the telling signs that you need to undergo one. Keep reading to find out more.

What is a sleep study?

Sleep medical examination by Doctor Gan ENT

It is a comprehensive test you can undergo at a sleep clinic in Singapore and is used to diagnose sleep disorders. During the sleep study, your brain waves, the oxygen level in your blood, heart rate and breathing, and eye and leg movements will all be recorded and monitored.

Typically performed at night, the sleep study aims to observe your sleep stages and cycles to identify your sleep patterns, as well as why they get disrupted. This helps your sleep specialist understand what causes you to feel tired the next day despite taking a rest, and allows an accurate diagnosis to be made.

The common signs you need to have a sleep study performed

Unsure if you need to undergo a sleep study? Look out for these common signs.

1. Excessive snoring

Snoring treatment in Singapore by Doctor Gan ENT

Snoring is one of the telltale signs you could be suffering from sleep apnea, a sleep disorder which can be potentially dangerous when left untreated. It is a condition in which your breathing starts and stops repeatedly due to throat muscles relaxing or your brain not sending proper signals to the muscles that control breathing.

Sleep apnea affects people of all ages and the symptoms you need to look out for include loud snoring, gasping for air while sleeping, waking up with a dry mouth, insomnia, and morning headache.

Learn more: Lifestyle Changes And Tips To Help You Stop Snoring For Better Sleep

2. Daytime sleepiness

Sleepy woman during work

Noticed that you cannot seem to keep your eyes open while at work or enjoy the time when you are awake because you feel sleepy during the day? A sleep study may be necessary to help you find out the underlying causes.

Daytime sleepiness can be a result of sleep disorders like sleep apnea, restless legs syndrome, and parasomnias such as sleep talking and walking. These conditions interrupt your sleep, causing you to feel deprived of rest and extra fatigued in the morning.

3. Lack of concentration

Signs of Sleep apnea

Not being able to concentrate and having memory lapses are not just symptoms of lack of sleep; these are two signs, apart from snoring, that you could be suffering from sleep apnea.

When left untreated, continuous breathing pauses due to sleep apnea can prevent your body from supplying sufficient oxygen to the brain, resulting in brain damage. Memory problems and difficulty focusing will then occur, greatly affecting your quality of life.

It is never too late to seek treatment to prevent further damage even if you are already experiencing issues with your memory or concentration.

4. Insomnia

Sleep apnea treatment in Singapore by Doctor Gan ENT

Insomnia is a common sleep disorder in Singapore, with a local reported rate of 15.3%. While factors such as anxiety and stress can contribute to insomnia, it is often closely linked with sleep apnea.

If you find that making lifestyle changes to reduce your stress levels or manage anxiety does not seem to help, getting a sleep study done to analyse if you are suffering from sleep apnea may be beneficial.

A sleep specialist can provide snoring treatments if you have been diagnosed with sleep apnea. Common treatments include prescribing nasal decongestants, a Continuous Positive Airway Pressure face mask, or dental devices to help you achieve better quality sleep.

5. Obesity

Sleep apnea caused by Obesity

It has been found that people who are obese are more likely to experience insomnia or trouble sleeping, while obesity is also associated with daytime fatigue. Individuals who are overweight are more susceptible to certain medical conditions, such as GERD, osteoarthritis and asthma.

Apart from these conditions, obstructive sleep apnea is also linked to obesity. Those extra pounds increase the chances of sleep apnea due to having more fat tissues around the neck and throat region, resulting in a narrower breathing passageway that can collapse during sleep.

You may wish to undergo a sleep study if you are overweight and experiencing poor sleep quality.

Learn more: How Weight Loss Plays A Role In Obstructive Sleep Apnea

Get a sleep study done in Singapore

Dr Gan Eng Cern is an ENT Specialist in Singapore who treats a wide range of conditions such as obstructive sleep apnea, tonsillitis, and rhinitis.

Consult him to find out more about sleep studies and treatment options for your condition.

Get in touch with us today!

    When Should You See an ENT Specialist in Singapore?

    • Any ear, nose or throat symptoms that you are troubled with or concerned about
    • Persistent blocked nose with mouth breathing or snoring

    Dr Gan Eng Cern

    Dr Gan Eng Cern is a distinguished ENT doctor with fellowship training. In addition to his clinical practice as an ear, nose and throat specialist in Singapore, Dr. Gan has contributed to the academic field as a Senior Clinical Lecturer at the Yong Loo Lin School of Medicine, National University of Singapore. He is recognised for his extensive research work, with numerous contributions to reputable international ENT journals. Dr Gan is also highly sought after as a speaker and has shared his surgical knowledge as a surgical dissection teacher at various prominent ENT conferences and courses.


    • 2020 – Reader’s Choice Gold Award for Best ENT Specialist (Expat Living Singapore)
    • 2016 – Best Educator Award (Eastern Health Alliance)
    • 2016 – “Wow” Award (Patient Compliment)
    • 2014 – Eastern Health Alliance Caring Award – Silver
    • 2014 – 19th Yahya Cohen Memorial Lectureship (awarded by the College of Surgeons, Academy of Medicine Singapore for best scientific surgical paper)
    • 2012 – Human Manpower Development Award (Ministry of Health, Singapore)
    • 2007 – Singhealth Best Doctor Award


    • MBBS – Bachelor of Science, Bachelor of Medicine, Bachelor of Surgery (University of New South Wales, Sydney, Australia)
    • MRCS (Edin) – Member of the Royal College of Surgeons Edinburgh, United Kingdom
    • MMed (ORL) – Master of Medicine in ENT (National University of Singapore)
    • FAMS – Fellow of the Academy of Medicine Singapore

    Why Choose Dr Gan Eng Cern


    Reliable & Reputable ENT Expert

    Experienced and patient ENT Specialist who has your best interests at heart. We aim to provide you with accessible and specialized care for any ENT condition in a comfortable setting.


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    Our ENT Specialist, Dr Gan Eng Cern, will be able to diagnose and offer personalised treatments for your specific ENT condition. You can expect a high level of ENT care in a spacious setting with in-house minor surgical, endoscopy, allergy testing and microscopy services.


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    There are various financial options available for you to ensure that you are able to receive the most optimal treatment and care. Our ENT clinic staff will be able to assist you with your medical insurance claims and work with your chosen healthcare organization to minimize the hassle and paperwork required. In some cases, you may be able to utilise the funds in your Medisave account to defray part of the costs of your treatment. As our clinic is accredited by the Medisave board, we are able to process your claims from your Medisave for certain clinic procedures.

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