Chronic Nasal Congestion at Night Is a Risk Factor for Snoring in a Population-Based Cohort Study

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Abstract
SEVERAL population-based studies have linked self-reported snoring to adverse health outcomes, including hypertension and ischemic heart disease,1 daytime sleepiness,2-4 and accidents.5 Most recently, the role of snoring in the development of cardiovascular conditions was investigated prospectively in the Nurses Health Study, a study of 72 231 nurses who have been followed up repeatedly since 1976.6 The significant associations of snoring with incident hypertension and cardiovascular disease found in this study add strong support to a causal role of snoring in adverse health outcomes.