No Smoking Day 2026: How Tobacco Carcinogens Cause Cancer

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No Smoking Day 2026: Tobacco Carcinogens' Deadly Role in Cancer Development

Extensive toxicological and epidemiological research has shown that these carcinogens cause DNA damage, mutational signatures, and tumor initiation across multiple organs.

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News18•11-03-2026, 12:35

No Smoking Day 2026: Tobacco Carcinogens' Deadly Role in Cancer Development

•Cigarette smoke contains over 7,000 chemicals, including at least 70 established human carcinogens.
•IARC classifies tobacco smoke as a Group-1 human carcinogen, causally linked to lung, oral, esophagus, pancreas, bladder, kidney, cervix, liver, and acute myeloid leukemia.
•Key carcinogens like Tobacco-specific nitrosamines (TSNAs), Polycyclic Aromatic Hydrocarbons (PAHs), and Aromatic Amines cause DNA damage and mutations.
•Volatile organic carcinogens (benzene, formaldehyde) and heavy metals (cadmium, arsenic) also contribute to various cancers.
•Carcinogens distribute systemically, explaining why smoking causes cancers across multiple organs, accounting for 80-90% of lung cancer cases.

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