Publications by authors named "Leontien Los"

Background: Cannabis is one of the most popular drugs of the 21st century, especially among adolescents and young adults. Evidence of a variety of lasting neuropsychological deficits as a result of chronic cannabis use has increased. Furthermore, regular cannabis use is found to be a predictor of mental health problems, less motivation in school, and school dropout.

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Issues: Migrant adolescents show specific risk and protective factors associated with substance use, but the extent to which prevalence rates differ between migrant and native-born youth in Europe remains unclear. The present study aims to provide a comprehensive review of all available substance use prevalence studies on differences in substance use between migrant and native-born adolescents in Europe.

Approach: In this systematic review, PubMed, Medline and Pre-Medline, EMBASE and PsycINFO were searched for articles comparing substance use prevalence rates (tobacco, alcohol, illicit drugs) between migrant and native-born adolescents or young adults aged 11 to 29 years in European countries.

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Objective: Adolescent depression is a heterogeneous disorder, with a wide variety of symptoms and inconsistent treatment response, and is not completely understood. A dysregulated stress system is a consistent finding, however, and exhaustion is a consistent trait in adolescent patients. The aim of this paper is to critically assess current hypotheses in adolescent depression research and reframe causes and treatment approaches.

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