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It is not recommended to smoke within the first day after the surgerygive it at least three days to ensure proper healing

Switch off devices at least an hour before bed, then you might like to take a warm shower, drink a decaf tea, and do some reading, journaling, or gentle meditation

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Peer review Peer review information Nature Communications thanks Igor Efimov, Kalyanam Shivkumar, Robert Strongin and the anonymous reviewer(s) for their contribution to the peer review of this work

More evidence and more information help people make more informed and better decisions about when to quit

Patients with Crohns disease who also smoke are more likely to have severe disease, need more medication to control the disease, necessitate surgery for their disease, and have recurrence of disease even after surgery