[The genetics of smoking].

The discovery of the relationship between smoking and genetic factors has been the focus of research over the last 10 years. In the following material we will approach the intervention of genetic factors in nicotine addiction, but also the protection against starting and continuing smoking, the influence on smoking withdrawal, on tobacco-induced medical conditions, the implication in the association of smoking with other types of drugs intake and the way in which these discoveries will influence genetic therapies in the future.