“…4,8 Similarly, patients who smoke have more infiltrating varieties and increased BC mortality compared to non-smokers. 5,9,10,14 The risk increases with the intensity of smoking (number of cigarettes per day), with RR (relative risk) of 2.0-5.0 among moderate to heavy smokers compared to nonsmokers. 4,6,9 The studies demonstrate a very convincing dose-response curve, although some researches show stabilization from moderate to severe consumptions, but they are attributed to confounding factors (recall bias, lower relative inhalation among large consumers, genetic polymorphisms, etc.…”