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Lung Cancer

Lung Cancer - Causes and Risk Factors

Cigarette smoking is the main cause of lung cancer. The risk of lung cancer developing in a smoker is 15-25 times more than for a non-smoker. The risk of lung cancer is greater with increasing number of years of smoking and with higher number of cigarettes smoked per day. Pipe, cigar and marijuana smoking also increase the risk of lung cancer. Breathing in the smoke of others (called second hand smoke) can increase the risk of developing lung cancer by about 30%. The risk to children of smokers is not yet accurately quantified. 

Exposure to certain workplace chemicals such as asbestos, coal gas, chromium, nickel, arsenic, vinyl chloride, and mustard gas may also increase the risk of lung cancer.

Despite the strong association of smoking with lung cancer, it has also been recognised that more than one-quarter of lung cancer cases in Singapore occur in people who have never smoked, and who do not have prior smoke exposure. 

Lung Cancer - Preparing for surgery

Lung Cancer - Post-surgery care

The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth

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