Previous studies have reported conflicting results in terms of acute effects of cannabis in
man. Independently of other factors, such discrepancy may be attributable to the different …

Abstract Purpose of Review The lack of clarity about the effect of cannabis use on cognition
may be attributable to the considerable heterogeneity among studies in terms of cannabis …

Use of cannabis or delta-9-tetrahydrocannabinol (Δ9-THC), its main psychoactive
ingredient, is associated with psychotic symptoms or disorder. However, the neurochemical …

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 …

Psychostimulant users are typically young adults. We have conducted a narrative review of
neuropsychiatric harms associated with the psychostimulants methamphetamine …

The neurobiological mechanisms underlying the association between cannabis use and
acute or long-lasting psychosis are not completely understood. While some evidence …

Research evidence suggests a dose–response relationship for the association between
cannabis use and risk of psychosis. Such relationship seems to reflect an increased risk of …

Aim The primary aim of this study was to examine the effect of recent tobacco, alcohol and
cannabis use on treatment outcomes among participants experiencing first episode …

Despite the growing interest in the prodromes of psychosis, the proper identification of those
Ultra High Risk (UHR) subjects who will convert to psychosis remains an unresolved issue. It …

A major factor associated with poor prognostic outcome after a first psychotic break is
cannabis misuse, which is prevalent in schizophrenia and particularly common in …