Background A mounting body of evidence suggests that polysubstance use (PSU) is
common among people who use opioids (PWUO). Measuring PSU, however, is statistically …

The increased frequency of risk taking behavior combined with marked neuromaturation has
positioned adolescence as a focal point of research into the neural causes and …

Despite being highly prevalent, adolescent mental health problems are undertreated. To
better understand the mental health treatment gap, we assessed the prevalence and …

Objective Longitudinal studies examining the association between adolescent cannabis use
and self‐harm are rare, heterogeneous and mixed in their conclusions. We study this …

Across high-income countries, adolescent emotional concerns have been increasing in
prevalence over the past two decades and it is unclear why this is occurring, including if and …

Background Substance use among school-going adolescents increases the risk of
developing mental disorders, addiction, and substance use disorders. These may lead to …

Unlike the consequences of substance and behavioral addictions and the profile of
adolescents with substance and behavioral addictions that were extensively studied, the …

Background Although evidence suggests that ultra-processed food (UPF) consumption may
trigger addictive behaviors, the association between UPF intake and psychoactive …

Tobacco and alcohol co‐use are two major lifestyle modifiable risk factors. Understanding
the determinants of both behaviors helps to develop interventions to prevent these …

Purpose Adolescents exposed to adverse childhood experiences (ACEs) are at increased
risk for health-compromising behaviors. However, few studies have investigated how ACEs …