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Obstructive Sleep Apnea

Sleep apnea is more than snoring

Obstructive sleep apnea (OSA) makes your breathing stop and start again and again while you sleep. It is common and often goes undiagnosed. It can affect your energy, your mood and your long-term heart health. We can help you get assessed, and if you live with obesity, we can add weight management to your care.

Think you might have OSA? We can arrange a referral to a sleep clinic we work with.

Already diagnosed? We provide medical weight management that works alongside your sleep specialist’s treatment.

What happens during OSA

With OSA, the upper airway repeatedly narrows or becomes blocked during sleep, interrupting breathing. Each pause can lower the oxygen in your blood and briefly wake your brain, often without you noticing. Weight is one factor that can contribute, but not the only one.

Adapted from “Sleep apnea” by Osmosis, via Wikimedia Commons. Excerpt: 00:27–01:27, trimmed and converted to MP4. Original and adapted clip licensed under CC BY-SA 4.0.

  • Restless sleep: Tossing, turning, or sudden jerky body movements.
  • Loud snoring: Often chronic and disruptive, though not everyone who snores has sleep apnea.
  • Breathing pauses: Times when breathing stops and starts, usually noticed by a bed partner.
  • Gasping or choking: Waking up abruptly with a shortness of breath or a choking sensation.
  • Daytime sleepiness: Feeling unusually sleepy during the day or struggling to stay awake, even after a full night in bed.
  • Morning headaches: Waking up with a headache.

Symptoms alone don’t confirm sleep apnea. Only a sleep assessment can diagnose it.

How sleep apnea affects your health

Sleep apnea can affect your energy, concentration and quality of life. Left untreated, it is also linked to serious long-term health problems.

Sleep apnea can put extra strain on your heart and blood vessels. It is linked to high blood pressure and a higher risk of heart disease, irregular heartbeat and stroke.

Sleep apnea is linked to insulin resistance, which means your body responds less effectively to the hormone that regulates blood sugar. This can contribute to higher blood sugar levels and make diabetes harder to manage.

Disrupted sleep can affect how you feel and think during the day. Sleep apnea is linked to low mood, difficulty concentrating and memory problems, which can make everyday tasks feel harder.

Sleep apnea can leave you feeling sleepy during the day, even after a full night in bed. This can make it harder to stay alert and increases the risk of accidents when driving or working.

About 1 in 4

Canadian adults aged 45 to 85 are estimated to have moderate to severe OSA.

More than 9 in 10

people at high risk have never been diagnosed.

3× the collision rate

In an Ontario study, drivers with untreated sleep apnea had three times the collision rate of matched drivers. After CPAP treatment, their rate fell to a similar level.

Treatment can improve sleep and reduce daytime sleepiness, helping you feel better and function better during the day.

How weight management affects your health

Part of the plan, not a replacement

Excess weight is one of the main risk factors for OSA. Body fat around the neck and upper airway can make the airway more likely to narrow or close during sleep. In one long-term study, losing 10% of body weight was linked to about 26% fewer breathing pauses per hour of sleep.

If you live with obesity, weight management can be one part of your OSA care. MWM provides medical treatment for obesity and dietitian-led behavioural support, working alongside the treatment your sleep specialist has prescribed.

Keep using your prescribed treatment. Weight management doesn’t replace it, and it can’t guarantee OSA will resolve. Talk to your care team before making changes.

We provide: medical weight management for adults living with
obesity.

We work alongside: your sleep specialist and doctor, who diagnose and treat your sleep apnea.

Care that works together

Your sleep specialist and primary care doctor guide your assessment, treatment and ongoing sleep apnea care.



Your MWM physician and registered dietitian support you with medical treatment and behavioural strategies for weight management.

Working alongside your prescribed sleep apnea treatment.

Choose the route that fits you

Think you might have OSA?

If you have symptoms of sleep apnea, we can help you take the next step. As part of your MWM care, our team can arrange a referral to a sleep clinic we work with. Their team can assess your symptoms and determine whether a home sleep apnea test is appropriate for you.

Diagnosed with OSA

Questions about sleep apnea and weight

Speak with your primary care doctor about symptoms such as loud snoring, breathing pauses noticed by someone else, or daytime sleepiness. They can assess your symptoms and arrange sleep testing when appropriate. MWM patients can also ask our team for a referral to a sleep clinic we work with. Symptoms alone cannot confirm a diagnosis.

Take the next step for your sleep health.

Think you might have OSA? Speak to our team about an assessment. Already diagnosed? Book a call to add weight management to your care.