| Hans-Günter Meyer-Thompson | Cannabis als Rauschmittel
UK. Calls for widespread survey into British cannabis after findings in Manchester research
A new report into cannabis in the UK has raised concerns about the potency of the drug.
The study was conducted at Manchester Metropolitan University.
Researchers there say it suggests most of the cannabis bought on the streets is high in the plant's most dangerous substance.
Only 50 samples of cannabis were tested, all from the Manchester area. They all showed the same results.
The cannabis showed high levels of THC (the chemical that makes users high) and low levels of CBD (the chemical that helps balance its affect). (BBC, 18.10.2017)