http://www.newscientist.com/article/...s-do-harm.html
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Healthy volunteers were given the molecules intravenously for two sessions. They received the same amount of THC during each session; the only difference was whether they received CBD as well. Thirty minutes after injection a consultant psychiatrist interviewed the volunteers and rated their experiences. Overall, volunteers were rated as being significantly less psychotic after being given THC and CBD compared to THC on its own. The implication is that the presence of CBD in cannabis counteracts THC's tendency to trigger transient psychosis.
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The authors believe that acting psychotic is a precursor to having the mental illness of psychosis. This does not ring true to me. If you regularly drink alcohol, you will not wind up permanently acting drunk.
Quote:
To help find out, the Beckley Foundation is setting up a research project in collaboration with University College London and a leading medical marijuana dispensary in California which supplies over 30,000 patients. The study will analyse different strains of cannabis for their THC and CBD content. Patients will be asked which strains they find most effective, how they compare with conventional drugs, and to rate other effects, both beneficial and negative.
As for street cannabis, the Beckley Foundation hopes that this research will be used to make it safer. Skunk, with a typical THC content of 15 to 19 per cent and a CBD content of zero, has come to dominate the street market.
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I am pretty sure we will come to find that not just CBD, but literally
hundreds of other similar chemicals called cannabinoids are very much present in "street weed", because
medicine has isolated THC and put it into a pill form and the effect of it is different than the effect of plain old weed.
Meanwhile if you look at the medical marijuana being produced, you will find that there are many different "strains", which people report as having drastically different results. Some are better as medicine than others -- some better for nausea, some better for pain, etc. and this can be explained by different levels of many different cannabinoids, some of which are more narcotic (for some people) than others.
