DefinitionAlternative NamesSecondhand smoke; Cigarette smoking; Tobacco cessation; Smoking and smokeless tobacco
InformationTobacco is a plant grown for its leaves, which are smoked, chewed, or sniffed for a variety of effects.
- It is considered an addictive substance because it contains the chemical nicotine.
- Tobacco also contains more than 19 known cancer-causing chemicals (most are collectively known as "tar") and more than 4,000 other chemicals.
Most smokers in the United States would like to...
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