Psychophysiological insomnia and respiratory tract infections: results of an infection-diary-based cohort study

The immune theory of sleep suggests an important role of sleep for a functioning immune system. Insomnia has been associated with heightened risk for infections. The aim of the study was to test whether psychophysiological insomnia (PI) is associated with subsequent respiratory tract infections (RTIs) in the context of an infection-diary-based cohort study.We recruited 674 adults from a cross-sectional survey on airway infections into the airway...