Lung Cancer

Smoking is the major cause of lung cancer, however, some people develop lung cancer without smoking. Smoking causes up to 90% of lung cancer. It is unusual under the age of 40 and the risk increases substantially after the age of 50. The younger someone started smoking, the higher their risk of getting lung cancer. One in 10 smokers will develop lung cancer. Passive (environmental) tobacco smoke causes lung cancer but the risks are less than if you yourself smoke.



  • A persistent cough

  • Shortness of breath

  • Coughing up blood-stained phlegm (sputum)

  • Chest discomfort - this may be noticed as a dull ache or a sharp pain when you cough or take a deep breath

  • Loss of appetite and loss of weight


Reduce your risks

  • Stop smoking

For more cancer-related information and support, please visit the Hong Kong Cancer Fund website or contact Hong Kong Cancer Fund free enquiry hotline: (852) 3656 0800


Learn more


Source: Hong Kong Cancer Fund


The information on this page is for reference only. It is not intended to constitute a recommendation, and it is not intended as a substitute for professional advice. You should not act on any information on this page without seeking specific professional advice.