Snoring is caused by reduced airways, and it's the vibrations as the air struggles to get through that causes the snore. The reduced airway can be in the throat or nasal passage. I'll come to the nasal passage later, but I want to concentrate on the throat. So, let's crack on with some of the causes of this blocked throat, and find out ways to stop them! Sleeping on your back is often the cause of snoring, as the throat and tongue muscle ease back towards the throat. There are specially shaped pillows you can buy to help with this, but why spend money when you can try free ways! Either use rolled up towels under one side of your head, or put a golf ball/walnut in a sock and pin it to the back of your nightwear. It's an ancient idea, but it does work!