Sleep Week is held every year in March - this year from March 9 to 13 - to draw attention to the importance of sleep as a fundamental pillar of health. Yet, despite a growing body of scientific knowledge on the subject, sleep disorders remain massively under-diagnosed and under-treated in Quebec. Approximately one adult in three reports insufficient or poor sleep on a regular basis, and the consequences for physical, mental and cognitive health are far from trivial.
Chronic insomnia, obstructive sleep apnea, restless legs syndrome, hypersomnia - sleep disorders take many forms, but share one common trait: they profoundly affect quality of life and can, in the long term, significantly increase the risk of cardiovascular disease, diabetes, depression and cognitive decline. The good news: most are effectively treatable.
Why sleep is essential to good health
Sleep is not a period of inactivity - it's an active, complex biological state during which processes essential to survival and health take place. During deep sleep, the body releases most of its growth hormone, consolidates learning and memories, repairs muscle tissue and strengthens the immune system. The glymphatic system - the brain's waste removal system - is up to ten times more active during sleep, evacuating amyloid proteins linked to Alzheimer's disease.
The average adult needs seven to nine hours of sleep a night to function optimally. A chronic sleep debt - even of one or two hours a night - has measurable cumulative effects on cognitive performance, emotional regulation, metabolism and resistance to infection. Contrary to popular belief, it is not possible to effectively «recover» a sleep debt accumulated during the week by sleeping more on weekends.
Chronic insomnia: more than just a bad night's sleep
Insomnia is defined as difficulties in falling asleep, maintaining sleep or waking up too early, associated with significant daytime suffering or impact. Chronic insomnia occurs when these difficulties occur at least three nights a week for more than three months. This persistent form of insomnia affects around 10 to 15 % of the adult Quebec population. The causes are multiple and often interrelated: anxiety, depression, chronic pain, poor sleep habits, medication, caffeine or alcohol consumption, and environmental factors.
The first-line treatment for chronic insomnia isn't medication: it's cognitive-behavioral therapy for insomnia, known by the acronym CBT-I. This structured approach, carried out with a trained professional, modifies the thoughts and behaviors that perpetuate insomnia. Its efficacy is superior to long-term sleeping pills, without the associated risks of dependency. Hypnotic drugs can be useful in the short term, but should not be the primary treatment for chronic insomnia.
Obstructive sleep apnea: the great unknown
Obstructive sleep apnea (OSA) is a disorder characterized by repeated episodes of partial or total closure of the upper airway during sleep, resulting in breathing interruptions - apneas - lasting from a few seconds to over a minute. These apneas fragment sleep, causing micro-awakenings and repeated drops in blood oxygen levels. The person wakes up tired despite an eight-hour night's sleep, snoring loudly, and may present breathing pauses observed by the partner.
OSA is very common - it affects around 15 to 25 % of adults to varying degrees - and very often goes undiagnosed. Its untreated consequences are serious: drug-resistant hypertension, cardiac arrhythmias, increased risk of heart attack and stroke, type 2 diabetes, depression and drowsiness-related road accidents. The gold standard treatment is continuous positive airway pressure (CPAP), which keeps the airways open during sleep by means of a pressurized airflow administered via a nasal or face mask.
Other sleep disorders to be aware of
Restless legs syndrome manifests itself as unpleasant sensations in the legs - tingling, burning, impatience - that occur at rest, especially in the evening and at night, and irresistibly compel you to move your legs to relieve them. It disturbs the ability to fall asleep and the quality of sleep. It may be primary or secondary to iron deficiency, renal failure or pregnancy. The often-associated periodic limb movement syndrome is characterized by involuntary leg movements during sleep that fragment rest without the person realizing it.
Idiopathic hypersomnia and narcolepsy are rarer disorders characterized by excessive daytime sleepiness despite sufficient night-time sleep. They require specialized investigation, including polysomnography and a multiple sleep latency test.
When and how to consult for a sleep disorder
A medical consultation is indicated when sleep difficulties have lasted for more than three to four weeks, have an impact on daytime functioning - concentration, mood, work performance - or are accompanied by intense snoring, observed pauses in breathing, marked daytime sleepiness or restless legs symptoms. The doctor takes a full history, may order a blood test to rule out treatable causes such as hypothyroidism, anaemia or iron deficiency, and if necessary refers the patient for a sleep study.
At many of our branches in Quebec, a medical consultation for sleep disorders can be obtained without prolonged delay or prior referral. Early treatment can prevent worsening and long-term complications.
Frequently asked questions about sleep disorders in Quebec
How do I know if I have sleep apnea?
The main signs suggestive of sleep apnea are loud, regular snoring, excessive daytime sleepiness despite adequate sleep time, waking up feeling suffocated or out of breath, morning headaches, dry mouth on waking, and difficulty concentrating. Your partner may notice pauses in breathing during sleep. If you experience more than one of these signs, a medical consultation is recommended. The diagnosis is confirmed by a nocturnal ventilatory polygraphy - a sleep recording that can be performed at home in many cases.
Are sleeping pills dangerous in the long term?
Benzodiazepines and related drugs - such as zopiclone - are effective in the short term for insomnia, but their long-term use is associated with significant risks: physical and psychological dependence, rebound effect on discontinuation, altered quality of deep sleep, memory and coordination problems, and increased risk of falls in the elderly. They do not treat the cause of insomnia - they mask its symptoms. CBT-I remains the most effective and long-lasting treatment for chronic insomnia, and should always be tried before or in parallel with any drug treatment.
Does alcohol help you sleep?
Alcohol's sedative effect makes it easier to fall asleep, but it significantly impairs sleep quality in the second half of the night. It suppresses REM sleep - the dream phase essential to memory consolidation and emotional regulation - and causes multiple micro-awakenings and sleep fragmentation. Consumed regularly as a sleep aid, it also promotes addiction and aggravates sleep apnea by excessively relaxing the muscles of the upper airways.
Can I consult Clinique Omicron for sleep disorders without having a family doctor?
Yes, at many of our branches in Quebec, you can make an appointment directly for a consultation concerning your sleep disorders, without the need for a family doctor or referral. The doctor will assess your symptoms, your sleep history and your general state of health, and refer you to the treatment best suited to your situation, whether this involves in-clinic treatment, home investigation or specialized referral.
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