Cancer may arise as a result of genetic predisposition, presence of risk factors, or either or both of them. Common risk factors of lung cancer are:

- active smoking

- passive smoking

- exposure to radioactive gases e.g., radon

- asbestos exposure

- exposure to diesel exhaust

- excessive usage of beta carotene

- air pollution

- family history of lung cancer

- talc or talcum powder exposure

Reference:
https://www.cancer.org/cancer/lung-cancer/causes-risks-prevention/risk-factors.html

Image via:
https://www.wcrf.org/dietandcancer/lung-cancer/

Risk Factors of Lung Cancer

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