Cannabis consumption by spanish young people

Cannabis is the illegal drug more consumed in First World?s countries; it is present in all socioeconomic and ethnic groups, as much in urban as in rural areas. Its consumption usually appears associated to other legal and illegal drugs. An important banalization exists on its use: only half of the young people consider that the cannabis consumption can cause many health problems and only 70% identify, from their parents, an attitude of absolute prohibition of consumption.