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Thats because cotinine is more stable and lasts longer in your body

19 Cochrane Reviews are independent assessments that attempt to answer important medical questions by examining the scientific literature as a whole

The term popcorn lung originated after the condition was identified in workers at a popcorn factory who had been exposed to high levels of diacetyl

Cigarette companies often advertised smoking as a way to stay happy and healthy, promoting cigarettes, as seen here, for the nerves and for digestion

Known and novel sources of variability in the nicotine metabolite ratio in a large sample of treatment-seeking smokers