The paper studies how negative life events affect risk behaviour of children and young people. Calculations on the database of the ‘Hungarian youth 2012’ research suggest that negative life events are strong predictors of different types of risk behaviour like alcohol, drug abuse and suicide. According to the data people who have experienced several and more serious negative life events, more likely refuse and turn away from the norms of the adult society than those whose life proves to be less stressful. To place these results into child protection context, the study calls attention to the fact that the Hungarian child protection system does not treat each group in the fragmented society equally, although, on the basis of the incidence of threat it should. Another important message of this paper is to highlight that in addition to scientific values large-scale sociological research studies have professional and practical values as well. To support it, from the questions of the well-known Holmes-Rahe scale the authors re-developed an exploration scale (Reduced Life Events Scale). The application of the Reduced Life Event Scale (or the original Holmes-Rahe scale) allows experts to focus more on the studied issues in the process of planning services, prevention and case work. The tool might propose solutions to use the insufficient resources in a more targeted way.