In most people, lung cancer is related to cigarette smoking. Smoking causes nearly 9 out of 10 cases (86%). A further 3% of cases of lung cancer are caused by exposure to second-hand smoke in non-smokers (passive smoking).
Here are some facts about smoking and lung cancer: The more you smoke, the more likely you are to get lung cancer but it is the length of time you have been a smoker that is most important Starting smoking at a young age greatly increases the risk Filtered and low tar cigarettes might not increase your risk quite so much, but most smokers cancel this out by taking more, deeper puffs or smoking more cigarettes As soon as you stop smoking your risk of lung cancer starts to go down Passive smoking (breathing in other people's cigarette smoke) increases the risk of lung cancer, but it is still much less than if you smoke yourself. It is almost impossible to work out the…
