Most people don't realize the potential health hazards of snoring. It can be a nuisance to those who have to hear it, but it can also lead to health problems down the road. Snoring is caused when the airway becomes narrow, making it difficult to breathe. It can even cause sleep apnea, a condition where breathing is interrupted during sleep. Frequent snorers may suffer from: Day time fatigue Bad headaches throughout the day Sleepiness Inability to focus Weight gain