In which case does snoring represent a serious health risk?

The relaxation of the tongue muscles and muscles of the mouth floor can lead to a complete occlusion of the rear airway with resulting breathing stops (obstructive sleep apnea). The breathing stops can last longer than a minute before the person suddenly awakes for a short time. Because these breathing stops may occur hundreds of times during one night, no deep sleep phase (REM-phase) is achieved and the oxygen saturation is not sufficient.