Preventing new substance use behaviors in youth: evaluation of a two-year comprehensive program.

Introduction: The Avenir Santé Association implemented a comprehensive prevention program targeting the consumption of the emerging psychoactive substances ecstasy (MDMA), cannabidiol (CBD), and nitrous oxide (NO).

Methods: The program was evaluated through four actions: (i) training for association workers ( = 84) (ii) on-site student party interventions ( = 248), (iii) social network-based prevention ( = 186), and (iv) provision of prevention tools for party organizers ( = 148).

Results: Results showed a significant increase in understanding of emerging substances among association workers, with a pre-training score of = 15.