 The investigators will also analyze, as a secondary aim, the psychological and lifestyle component of smokers involved in order to fine correlation data that might be used to compute a predictor index able to suggest the probability of success, with respect to the reduction of tobacco consuming, of the use of a TFC and to maintain the abstinence. The study will be organized as a nested randomized controlled study with two arms: one experimental group and one control group. The study will be nested in the screening program for lung cancer, where subjects will be recruited. 