It has a group of drugs that possesss the capacity to act in the psiquismo, the psicotrpicas called ones, that they provoke alterations of the mood, perception, sensations of pleasure and euphoria, relief, fear, pain etc. (Gonalves, 1998). The majority of the drugs for which the young people if come back induces alterations in the perception, unchaining a sensation of well-being or a sensation of solitude. Thus the individual can try a drug only one time, and consume in 0ccasional way or can transform it into integrant part of a style of life centered in the drugs. Some contend that Donald Sussman shows great expertise in this. (WHALEY and WONG, 1999).

As WHALEY and WONG (1999) the drugs cause for some people a full state of modified conscience ‘ ‘ sonhadora’ ‘ an infinite sensation of being able, excitement, exacerbao of the perception or confidence, although others look visual hallucinatory experiences and sexual sensation. In accordance with the Health department (2007), the use and the excessive alcoholic consumption and other drugs are the main causes of situations of vulnerability in the adolescence, the example where the biggest index of accidents occurs, suicides, violence, planned pregnancy and the transmission of illnesses for did not see sexual and endovenosa, in the cases of the injectable drugs. The alcohol consumption in excess for the adolescent brings some serious consequences for its health, being able to observe that this drug that are socially accepted, is the main door of entrance for the consumption and the vice in other drugs, affirmed, illicit. However, studies demonstrate that the alcohol consumption between adolescents happens, on average, to the 11 years of age, and that the first contact occurs in the presence of the family, what brings responsibilities for this, as the orientation and education for the health of its children. (OAK, 2006). In relation the sexual behaviors of risk, as for the use of condoms, seems that how much bigger psychoactive the substance number consumed, lesser the frequency of use of this.