Influence of smoking, alcohol consumption, drug usage, and lack of physical activity on health

In the framework of project "lnequality in health In adolescents", the influence of smoking, alcohol consumption, drug usage, lack of physical activity. and their cumulative influence on health was Investigated in the sample of Slovak adolescents (n = 2616, including 1370 boys, average age 15 years). The data were collected by the questionnaire form. The results confirm the detrimental influence of smoking, alcohol consumption, drug usage, and lack of physical activity on adolescents' health. The particular types of risk behaviour show the detrimental influence on health. Only in the case of connection of sport and injury occurrence, the influence of risk behaviour on the health is opposite to the presumptions, the injuries occur more often in sporting adolescents than in non-sporting ones. The undesirable influence of particular types of risk behaviour on health cumulates.