Bougas N, Fresneau B, Pinto S, et al. - Since unhealthy behaviors among childhood cancer survivors increase the risks of cancer treatment adverse effects, researchers sought to evaluate tobacco and cannabis use prevalence in this population and to identify factors correlated with these consumptions. The French childhood cancer survivor study cohort included 2,887 5-year survivors in this research. Using multivariable logistic regressions, associations of current smoking and cannabis use with clinical characteristics, sociodemographic characteristics and health-related quality of life were examined. Preventive interventions and cessation programmes must begin as soon as possible in the lives of survivors, particularly among young males with low educational levels and poor mental health.