The most common cause of obstructive sleep apnea is an obstruction of the airway caused by the soft tissues in the back of the throat when they collapse during sleep. This collapse can be caused by a variety of factors, including obesity, enlarged tonsils, a deviated septum, and/or a large tongue.
Obesity is the most common cause of obstructive sleep apnea, as excess fat deposits in the neck can narrow the airway, making it more likely to collapse during sleep. People who are overweight or obese are more likely to experience airway collapse than those of a healthy weight.
Enlarged tonsils can also cause airway obstruction during sleep. Enlarged tonsils can block the throat, making it difficult to breathe. Similarly, a deviated septum can cause airway blockage by creating a narrow nasal passage.
Lastly, a large tongue can also cause airway obstruction during sleep. A large tongue can block the throat, making it difficult to breathe.
Overall, the most common cause of obstructive sleep apnea is an obstruction of the airway caused by the soft tissues in the back of the throat when they collapse during sleep. This can be due to obesity, enlarged tonsils, a deviated septum, and/or a large tongue.