what is the active ingredient in tobacco that causes addiction Most products, including e-cigarettes, contain nicotine, a chemical can harm heart, brain and whole body. As with other addictive products, using a nicotine product builds tolerance, leading to more Tobacco Addiction: Symptoms, Causes, Effects
Tobacco Addiction: Symptoms, Causes, Effects and Treatment Tobacco Addiction: Nicotine and Other Factors, Animation Why don't smokers quit? ASH > Action on Smoking & Health Tobacco Addiction Guide: Symptoms, Risks & Recovery
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