What causes lung cancer?
A number of factors can increase a person’s risk of developing lung cancer, one of the main ones being smoking tobacco.
Cancer Research UK explains: “Smoking tobacco is the biggest cause of lung cancer in the UK. Around seven out of 10 lung cancers are caused by smoking. This includes breathing in other people’s cigarette smoke.
“Even light or occasional smoking increases the risk of lung cancer. But your risk increases more the longer you smoke and the more you smoke.
“Stopping smoking is the best thing you can do for your health. The sooner you stop, the better.”
Other risk factors include asbestos exposure, air pollution, previous lung disease, exposure to radon gas and a family history of lung cancer.