What Causes OSA?
The most common cause of OSA is the narrowing or partial blockage of the airway due to changes in the structure of the windpipe or throat muscles.
This can be caused by genetic and physical factors, including
Overweight
Extra fat tissue in the neck squeezes the airway, reducing
Poor Muscle Tone
Poor muscle tone in the tongue and throat can cause the airway to collapse during sleep.
Large Neck Size
A neck circumference of more than 16 inches in men or 15 inches in women increases the risk for OSA.
OSA Family History
Having a family member with OSA may be linked to an increased risk for OSA.
Heavy Alcohol Use
Drinking too much alcohol can make the throat muscles relax more than average during sleep, causing them to block the airway.
Smoking
Smoking can increase inflammation and fluid retention in the upper airway, narrowing it and increasing the risk for OSA.
Nasal Congestion
Swelling and blockages of the nasal passages can make breathing harder through the nose, forcing people to breathe through the mouth and causing the throat to collapse.