Doctors and researchers know that people who smoke cigarettes often develop problems with sleeplessness and other types of sleep disturbances. However, the underlying reasons for these disturbances are not entirely clear. In a study published in May 2014 in the journal Addiction Biology, researchers from over a dozen German institutions used a large-scale project to examine the connection between cigarette use and sleeping problems. The researchers also examined the role that nicotine addiction plays in establishing this connection.
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