Translational Psychiatry
September 6, 2022
Tabea Schoeler, Jason Ferris, Adam Winstock
48 citations
Cannabis, a widely used psychoactive substance, can trigger acute cannabis-associated psychotic symptoms (CAPS) in people who use cannabis (PWUC). To assess rates and correlates of CAPS requiring emergency medical treatment, we analyzed data from an international sample of PWUC (n = 233,475). We found that 0.47% (95%CI 0.42; 0.52) PWUC reported lifetime occurrence of CAPS, defined as the...
The Lancet Psychiatry
July 10, 2017
Tabea Schoeler, Natalia Petros, Marta Di Forti et al.
142 citations
Background Cannabis use following the onset of first-episode psychosis has been linked to both increased risk of relapse and non-adherence with antipsychotic medication. Whether poor outcome associated with cannabis use is mediated through an adverse effect of cannabis on medication adherence is unclear. Methods In a prospective analysis of data acquired from four different adult inpatient and...
The Lancet Psychiatry
October 1, 2016
Tabea Schoeler, Natalia Petros, Marta Di Forti et al.
BACKGROUND Although cannabis use after a first episode of psychosis has been associated with relapse, little is known about the determinants of this most preventable risk factor for relapse of psychosis. Here we aimed to study whether the effects on outcome vary depending on the type of cannabis consumed and usage pattern. METHODS In this observational study, we prospectively recruited and...
JAMA Psychiatry
September 28, 2016
Tabea Schoeler, Natalia Petros, Marta Di Forti et al.
106 citations
IMPORTANCE: Cannabis use after first-episode psychosis is associated with poor outcomes, but the causal nature of this association is unclear. OBJECTIVE: To examine the precise nature of the association between continued cannabis use after the onset of psychosis and risk of relapse of psychosis. DESIGN, SETTING, AND PARTICIPANTS: This prospective cohort study followed up for at least 2 years...
The Lancet Psychiatry
March 1, 2016
Tabea Schoeler, Anna Monk, Musa Sami et al.
BACKGROUND Although the link between cannabis use and development of psychosis is well established, less is known about the effect of continued versus discontinued cannabis use after the onset of psychosis. We aimed to summarise available evidence focusing on the relationship between continued and discontinued cannabis use after onset of psychosis and its relapse. METHODS In this systematic...
Psychological Medicine
January 2016
Tabea Schoeler, Joseph P. Kambeitz, I Behlke et al.
Effect of cannabis use on memory function is a contentious issue, with effects being different in healthy individuals and patients with psychosis. Employing a meta-analytic approach we investigated the effects of cannabis use on memory function in patients with psychosis and healthy individuals, and the effect of diagnosis, memory dimension and moderating factors. A total of 88 studies were...
Substance Abuse and Rehabilitation
2013
Tabea Schoeler, Sagnik Bhattacharyya
Investigating the effects of cannabis use on memory function appears challenging. While early observational investigations aimed to elucidate the longer-term effects of cannabis use on memory function in humans, findings remained equivocal and pointed to a pattern of interacting factors impacting on the relationship between cannabis use and memory function, rather than a simple direct effect of...