A study was released at the end of last month in the journal Addiction by researchers from both the University of Bath and King’s College London.
The new study tracked the changes to resin and herbal marijuana in the EU market for the very first time and used data collected by the European Monitoring Centre for Drugs and Drug Addiction which included 28 EU member states, Norway and Turkey.
According to the findings, resin potency increased from 8.14 percent THC in 2006 to 17.22 percent in 2016. The study found that this increase was due to the use of new resin production techniques developed in Europe and neighboring markets.
Findings also revealed that EU herbal cannabis also increased in potency from 5.00 percent THC to over 10 percent THC in in the same time frame.
Lead author of the study, Dr Tom Freeman, said in The Gaurdian saying: “These findings show that cannabis resin has changed rapidly across Europe, resulting in a more potent and better value product.”
