This study aims to explore the interaction between risky lifestyles and relationship with parents in explanation of adolescent offending. There is insufficient research on the interaction but leaves some indications that the interaction could have an impact on adolescent offending. It is hypothesized that a stronger relationship with parents reduces the risky lifestyle’s impact on adolescent offending. The results and conclusions are based on quantitative data from a survey in Halmstad (N = 1003) in the year 2005. Four blockwise multiple linear regression models are estimated where the dependent variable adolescent offending is explained by five variables: gender, immigrant background, relationship with parents, lifestyle risk and the interaction between relationship with parents and lifestyle risk. The result shows that there is a significant negative interaction between relationship with parents and lifestyle risk in explanation of adolescent offending. The lifestyle risk’s effect on adolescent offending is lesser for adolescents with strong relationship with parents and greater for adolescents with weak relationship with parents. The conclusion is that a strong relationship with parents may protect adolescents with risky lifestyles from committing criminal acts.