Lung cancer

Lung cancer is the second most common cancer in Hong Kong.

Can lung cancer be prevented?

Lung cancer is the second most common cancer in Hong Kong. In 2014, 4,674 cases of lung cancer were diagnosed.

The lungs transfer oxygen into the blood when you breathe in and remove carbon dioxide from the blood when you breathe out.

By far the most important thing you can do to prevent lung cancer is to not smoke, or to give up smoking. If you do smoke, stopping smoking will reduce your risk.

We also have evidence that consuming high levels of a molecule called beta-carotene, which you might find in some dietary supplements, can increase lung cancer risk in smokers.

This is one of the reasons we recommend you do not rely on supplements for cancer prevention. In general, it’s best to get all the nutrients you need from a healthy balanced diet rather than from supplements.

However, it’s fine to take supplements if you are specifically advised to take them by a healthcare professional – for example, if you are pregnant or trying to conceive, you should take folic acid.