Who can develop lung cancer?

Smoking is a major risk factor, but it is not the only one. Risk can also relate to second-hand smoke, some workplace exposures, outdoor or indoor air pollutants, prior chest radiation, and inherited or acquired changes in cells. Some people have no obvious risk factor. Age, family history, previous cancer, and the type of lung tumour can influence clinical assessment. A cough, breathlessness, chest discomfort, recurrent chest infections, or a hoarse voice can have several causes; a symptom does not by itself show that cancer is present.

Arrange a medical review for persistent or changing respiratory symptoms, especially when they interfere with sleep, activity, or eating. The clinician may ask about smoking and exposure history, examine you, and arrange imaging or other tests. If cancer is found, tissue testing and genomic tumour profiling may help identify features that guide treatment choices. Stopping smoking can support health at any stage, and a clinician can offer practical help without blame. Keep a record of symptom changes, medicines, and relevant workplace or household exposures.

Seek urgent help for severe breathing difficulty, coughing up more than a small amount of blood, new confusion, fainting, or sudden chest pain. Contact a clinician soon about a cough that persists or changes, unexplained tiredness, repeated chest infections, or a hoarse voice that does not settle. These symptoms can have non-cancer causes, but timely assessment matters.

Which personal or workplace exposures matter in my history? What tests would clarify the cause of my symptoms? Do I need a chest scan or referral? If cancer is diagnosed, would genomic tumour profiling be useful? What help is available if I want to stop smoking?