Addiction is one of the biggest social, health and spiritual problems of our time, and it affects a lot of teenagers. This thesis looks at how the Church can help young people avoid addiction. The research is based on reviews of the literature, along, with some practical experience. The thesis explains what addiction is, what kind of addiction exist, and how it connects to medicine, addiction studies, psychology. It also looks at the important role of the family during adolescence, and at the different forms of substance and behavioral addictions. One section deals with the theological side, showing that the Bible also speaks about addiction. The findings suggest that the Church has an important role, especially in prevention, but also in noticing supportive communities. The thesis concludes that church-based prevention works best when it is done together with professional helpers.