IIRC the lifetime risk of lung cancer for smokers is more like 20%. For reference, among non-smokers the risk of lung cancer[0] is about 1%. So smoking is repre

IIRC the lifetime risk of lung cancer for smokers is more like 20%. For reference, among non-smokers the risk of lung cancer[0] is about 1%. So smoking is represents a 20x increase in risk. Around 80% of lung cancers are found in smokers and another 10% with heavy exposure to second-hand smoke. Smoking is the single largest risk factor for lung cancer. [0] All numbers are based on general population of US, so heavily white-skewed, I dunno about asian americans specifically.