What Causes Snoring? Snoring occurs when there is an obstruction to the free flow of air through the passages at the back of the mouth and nose. This obstruction causes the tissues in these areas to vibrate, leading to the characteristic sound of snoring. The obstruction can be due to various reasons, including poor sleep posture, abnormalities in the soft tissues of the throat, or health conditions like obesity, which can increase the bulk of tissue in the throat. Anatomical Causes of...