Snoring is not normal in anyone. Snoring is usually due to an obstruction of the airway in either the nose or throat. As the body attempts to move air past this obstruction, the tissues vibrate against each other, producing the snoring sound. It is estimated that 45% of men and 30% of women snore on a regular basis.
People who snore have a higher risk of heart disease, stroke and atherosclerosis (plaque buildup in the arteries). Snoring can also cause headaches, orofacial pain (such as TMD), fatigue and reduced work performance. Snoring can also annoy and disrupt sleep quality of bed partners. Many couples, who sleep with a snorer, tend to sleep in separate bedrooms.
If left untreated, snoring will gradually lead to much worse sleep breathing disorders that can completely stop you from breathing (e.g. Obstructive Sleep Apnoea).