The United Kingdom has approved a historic measure: people born after 2009 will not be able to legally buy tobacco in their lifetime. It is not a question of punishing those who already smoke, but of something key: preventing it from starting. Because most smokers start in adolescence, when the brain is more vulnerable to developing dependence. And the earlier you start, the more difficult it is to quit later. In addition, we are talking about one of the most harmful products, with millions of deaths every year. Will we see something like this in Spain?