The article discusses juvenile offenders and individuals taking drugs in the context of GST – Robert Agnew’s General Strain Theory. The unique character of this theory results from the fact that it is the only theory referring to negative relations as a risk factor for juvenile delinquency. Due to the author’s interests, a special attention is placed on sex offenders. The paper explains legal aspects of these behaviours and basic terms arising from the theoretical concept in which the author decided to set her research.