The louder the Snore, the bigger the problem; one of the worst problem associated with this is a condition called sleep apnea, the person literally missed breathing, and those more prone to sleep apnea are overweight, middle-aged.
Snoring may be the result of wrong sleeping position. Sleeping with too many pillows can stretch and narrow the air passage. Try to use one pillow to avoid it. Sometime lying on back can cause snoring. In louder case medical advice is required.