Patients had filled in a health examination and researchers collected information on snoring at baseline.
They were followed up after two and four year periods, when cases of chronic bronchitis were identified.
Results show patients snoring five times a week were 25% more likely to develop chronic bronchitis, and those who snored more than six or seven times a week were 68% more likely to develop bronchitis.
Authors wrote: ‘Our findings provide support for the hypothesis that snoring influences the development of chronic bronchitis.’
Archives of Internal Medicine (2008) 168: 167-173