By Dr Gagan Saini Lung cancer conjures up an image of a chronic smoker. While it is true that smoking causes 4 in 5 cases of lung cancer, the trend of lung cancer in non-smokers is also on the rise. A recent study reported a doubling of lung cancer incidence in non-smokers and this was not due to change of proportions but due to rise of absolute numbers. This brings up the question of why non-smokers get lung cancer. Cancer is a disease caused by an uncontrolled division of abnormal…
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