Cannabis Strength Soars Over Past Half Century

Cannabis Strength Soars Over Past Half Century
AP Photo/Richard Vogel,File

New research shows that over the past 50 years street cannabis across the world has become substantially stronger carrying an increased risk of harm.

The team behind the study from the Addiction and Mental Health Group at the University of Bath, synthesised data from over 80,000 cannabis samples tested in the past 50 years from street samples collected in the USA, UK, Netherlands, France, Denmark, Italy and New Zealand.

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