High-strength cannabis now dominates illegal market, study finds

Samples showed huge rise in highly psychoactive strains, raising public health concerns

Almost all cannabis seized by police now comprises high-strength varieties, with outdoor-grown herbal strains and hashish barely found, according to a new analysis.

In the first study of its kind for 10 years, researchers from GW Pharmaceuticals, which makes medicines derived from cannabis, and King’s College London found 94% of samples seized by police were varieties with a high psychoactive content, suggesting they dominate the illicit market. The researchers warned of “concerning implications for public health”.

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from The Guardian http://ift.tt/2CLRVGv