Cannabis is the second most commonly used recreational drug, after alcohol, in the UK. The number of regular users has risen considerably over the past decade, and this has been particularly apparent in the adolescent population. With this rise there have been concerns about the long term consequences of heavy cannabis use. Cannabis use has [read the full story…]
The NICE guideline on psychosis with coexisting substance misuse was published in 2011, which means it’s now nearly 3 years out of date. This is because guidelines take many months to produce, so by the time they are published the evidence in them is 1 year old at best. Some NICE guidelines are supplemented by [read the full story…]
This well conducted prospective cohort study looks at the impact that cannabis use can have on the development of the brain over a 20 year period, from the teenage years to middle-age. The research studied 1,037 people from New Zealand who are part of the Dunedin Multidisciplinary Health and Development study, which followed participants from [read the full story…]
Delusional-like experiences (DLE) are quite common in the general population with a median prevalence of around 3.5% (ref 2). Studies show that these experiences often go hand-in-hand with other mental health conditions such as depression and anxiety, as well as other chronic physical disorders such as impairments in hearing and vision. It is thought that [read the full story…]
Cannabis (marijuana) is the most widely used illicit drug in the world and reports of driving under the influence of cannabis have risen in recent years. A research team from Dalhousie University in Canada conducted a systematic search and identified observational epidemiology studies of motor vehicle collisions with an appropriate control group. They included studies [read the full story…]
Using cannabis can lead to a loss of brain volume in people who are at risk of developing schizophrenia, according to a study published in the November issue of the British Journal of Psychiatry. The finding by researchers from the University of Edinburgh could be important in understanding more fully the link between cannabis use [read the full story…]
This meta-analysis adds more weight to the argument that cannabis use plays a causal role in the development of psychosis in some patients. The review pooled 83 studies that reported on age at onset of psychotic illness in substance-using and non–substance-using groups. The study found that: Age at onset of psychosis for cannabis users was [read the full story…]
