Marijuana effectiveness has actually doubled throughout Europe in the past years, according to the very first study to track modifications in the drug throughout the continent. The research study, released on Sunday in the journal< a href=" http://www.addictionjournal.org/ ” title=”" class=” u-underline” > Addiction and carried out by researchers from the University of Bath and King’s College London, finds that both cannabis resin and herbal marijuana have increased in strength and cost with possibly harmful repercussions for users.
In natural cannabis, concentrations of THC– the main psychoactive constituent of cannabis which has actually been linked to psychosis– increased from 5% in 2006 to 10% in 2016.
For cannabis, THC concentrations stayed relatively steady between 2006 and 2011 prior to increasing rapidly from 10% to 17% between 2011 and 2016.
The rate of herbal cannabis increased from EUR7.36 per gram to EUR12.22 in between 2006 and 2016 while the price of cannabis increased from EUR8.21 per gram to EUR12.27 per gram over the same period.
In the UK alone, THC levels in organic cannabis remained roughly comparable in between 2006 and 2016, however police seizures suggest they have actually increased dramatically in cannabis.
” These findings show that cannabis has changed quickly throughout Europe, resulting in a more powerful and better value product,” said Dr Tom Freeman from the Addiction and Mental Health Group within the Department of Psychology at the University of Bath who led the research study, which was moneyed by the Society for the Study of Dependency.
Increases in the potency of cannabis resin are mainly down to new production strategies in Morocco and Europe. But while THC levels have increased, amounts of cannabidiol (CBD) discovered in cannabis believed to balance out some of the harmful impacts of THC– have actually remained stable or declined.
” CBD has the potential to make marijuana much safer, without restricting the positive effects users look for,” Freeman stated. “What we are seeing in Europe is a boost in THC and either stable or reducing levels of CBD, potentially making cannabis more harmful.”
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