You snore when some parts of your throat vibrate. This only happens when you're asleep. The part of your throat that vibrates is called the pharynx. It is right behind the tongue. Several small muscles hold it open. But when you sleep, these muscles relax. This makes it vibrate more easily. It also becomes narrower. When you breathe in, it will vibrate and make a noise. The narrower it is, the more easily it will vibrate and the louder you will snore.
Your risk of snoring is increased by:
Problem snoring may be an early warning signal that sleep apnoea is present. Your GP can refer you to a sleep specialist who will probably want you to do a sleep study. Sleep apnoea is a serious health issue that needs attention.
If you are overweight, losing weight might help. Try and avoid alcohol for at least four hours before sleeping. If your snoring is made worse by an allergy, try and stay away from whatever sets it off.
For children who snore, it is common to take out the tonsils as tonsillar enlargement is a common cause. This often succeeds.