Background There is ongoing uncertainty about whether cannabis use increases the risk of
developing an anxiety disorder. In this study we estimated the risk of having an incident …

In this Topical Collection of Current Addiction Reports, we discuss the results of five review
articles in the field of dual diagnosis—the co-morbidity of substance misuse and psychiatric …

Background Cannabis use may be a modifiable risk factor for mental health problems;
however, the role of cannabis use frequency in population seeking mental health and …

Several jurisdictions across the globe have introduced legislation to legally permit the sale
and consumption of recreational cannabis. This editorial considers current evidence from …

BackgroundEpidemiologic research suggests that youth cannabis use is associated with
psychotic disorders. However, current evidence is based heavily on 20th-century data when …

To the Editor In the article by Myran et al, 1 the authors found that individuals with an
incident emergency department (ED) visit for substance use with and without psychosis …

In Reply We thank Leung and Weisskopf for their comment on our article. 1 Their main point
is that we inappropriately used causal language when discussing our findings. We outline 2 …

Background An increasing number of countries have or are considering legalizing cannabis.
One concern is that legalization of cannabis will result in increased cannabis use and in turn …

Background: The transnosographic nature of negative symptoms (NS) makes them fruitful for
detecting psychiatric symptoms. The main objective of this study was to determine whether …

This work is supported by the corresponding author's National Institute for Health and Care
Research (NIHR) Advanced Fellowship (NIHR302215). The views presented here are those …