Tobacco addiction is a chronic disease caused by nicotine, a substance as addictive as other drugs. Each cigarette delivers 1–2 mg, which quickly reach the brain and generate pleasure, creating tolerance and the need to smoke more. Upon quitting, withdrawal symptoms appear: anxiety, irritability, sadness, and increased appetite. Addiction often begins in adolescence and combines chemical and psychological dependence, with the latter being the most difficult to break due to associated social habits. With support and new habits, quitting smoking is indeed possible.