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Snoring is a problem suffered by 40 million people. Snoring is the noise caused by vibration of tissues of the mouth, throat and nose at night, often caused from blockage and influenced by things like sleeping position. Researchers at Oregon Health Sciences University are investigating the causes, symptoms and treatments of snoring. Many factors can increase snoring. Physical conditions that cause snoring are poor muscle tone in the breathing passages, a long uvula, a long soft palate, congestion, excess fatty tissues in throat, etc. If snoring problems are mild they can be treated with lifestyle changes, but if they are serious they should be treated by a doctor.