In Chile, the consumption pattern in 2008 showed that 49.8 % consumed at least once in the last month for alcohol, 3.5 % for marihuana and 1.3 % for cocaine. This prevalence was even greater in young adults and adolescents and is associated with other mental health issues and poorer life quality. Those who have consumed marihuana during the last year, 25% report dependence symptoms. For cocaine derives, dependency rises up to 50% among the consumers. This data reinforce the need to design and implement strategies for reducing alcohol and drugs consumption in our population.