A disorder that is characterized by use of tobacco, snuff or other substances containing nicotine which generally produces central nervous system stimulation, but in high doses can also have depressant effects. The general physical effects of nicotine use include irritation of lung tissues, constriction of blood vessels, and increased blood pressure and heart rate. Health risks include chronic bronchitis, emphysema, stroke, heart disease and cancers of the lungs, mouth, throat and esophagus.
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