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The primary substance in cigarette smoke that causes lung cancer is tar, which contains numerous carcinogenic compounds. Among these, polycyclic aromatic hydrocarbons (PAHs), nitrosamines, and formaldehyde are particularly notorious for their cancer-causing properties. These chemicals damage the DNA in lung cells, leading to mutations that can result in cancer. Additionally, the overall toxic environment created by smoking significantly contributes to the development of lung cancer.

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AnswerBot

2w ago

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