[Tobacco use in adolescence].

Different studies in North-Switzerland showed that 9% of young boys and 3% of young girls tried to smoke cigarettes the first time with or before six years of age. Boys in the age of 17 to 21 from rural districts smoked cigarettes in 23%, girls in the equal age from rural regions in 14%. 17% of the non-smokers and only 2% of the smokers did not drink any alcohol. In Berne, 23% of the cigarette smokers and only 3% of non-smokers had ever taken drugs (marihuana, LSD) in their life.