Negative consequences associated with dependence in daily cannabis users

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Negative consequences associated with dependence in daily cannabis users

BACKGROUND Cannabis is the most widely consumed illicit substance in America, with increasing rates of use. Some theorists tend to link frequency of use with cannabis dependence. Nevertheless, fewer than half of daily cannabis users meet DSM-IV-TR criteria for cannabis dependence. This study seeks to determine whether the negative aspects associated with cannabis use can be explained by a proxy...

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Dependence symptoms in young cannabis users? A prospective epidemiological study.

AIM To examine prospectively over a period of 4 years the profile of cannabis dependence and the risk of specific dependence criteria in a community sample of adolescents. METHODS A representative community sample of 2446 young adults aged 14-24 years at baseline was followed up over a period of 4 years. Frequency of use measures and of criteria for DSM-IV dependence were assessed by standard...

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Differentiating new cannabis use from residual urinary cannabinoid excretion in chronic, daily cannabis users.

AIMS To develop and validate empirically a mathematical model for identifying new cannabis use in chronic, daily cannabis smokers. DESIGN Models were based on urinary creatinine-normalized (CN) cannabinoid excretion in chronic cannabis smokers. SETTING For model development, participants resided on a secure research unit for 30 days. For model validation, participants were abstinent with da...

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Daily use, especially of high-potency cannabis, drives the earlier onset of psychosis in cannabis users.

UNLABELLED Cannabis use is associated with an earlier age of onset of psychosis (AOP). However, the reasons for this remain debated. METHODS We applied a Cox proportional hazards model to 410 first-episode psychosis patients to investigate the association between gender, patterns of cannabis use, and AOP. RESULTS Patients with a history of cannabis use presented with their first episode of ...

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Poor decision-making by chronic marijuana users is associated with decreased functional responsiveness to negative consequences.

Chronic marijuana users (MJ Users) perform poorly on the Iowa Gambling Task (IGT), a complex decision-making task in which monetary wins and losses guide strategy development. This functional magnetic resonance imaging (MRI) study sought to determine if the poor performance of MJ Users was related to differences in brain activity while evaluating wins and losses during the strategy development ...

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ژورنال

عنوان ژورنال: Substance Abuse Treatment, Prevention, and Policy

سال: 2007

ISSN: 1747-597X

DOI: 10.1186/1747-597x-2-3