Reference summary — not medical advice or a personal risk estimate.
Cigarettes
Combusted tobacco products; the leading preventable cause of cancer worldwide.
Also known as: smoking, cigarettes
IARC-classified factors documented in this product
- Exposure from · Source: IARC
Direct IARC Group 1 — the most-studied human carcinogen.
- Exposure from · Source: IARC Monograph 100E
Major volatile carcinogen in tobacco smoke.
- Exposure from · Source: IARC Monograph 100E
Combustion byproduct in every puff.
- Exposure from · Source: IARC Monograph 100E
Volatile carcinogen in tobacco smoke.
How to read this page
A factor appearing on this page means it has been documented in this product category — through EPA / FDA testing, IARC monographs, or regulatory recall records. Whether it presents a meaningful personal risk depends on the specific formulation, dose, and how you're exposed. Click any factor to read what science actually says about it, and where.