Question -What is the most common cause of lung cancer in never smokers?
Answer - The cited article notes “Radon exposure has been classified as the second cause of lung cancer, after tobacco, and the first in never smokers. GSTM1 and GSTT1 genes deletion increase the risk of lung cancer.” (Ruano-Ravina A et al. Genetic susceptibility, residential radon and lung cancer in a radon prone area. 2014 J Thoracic Onc 9(8): 1073-1080)
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