Effect of cannabis potency on the consumer

Cannabis is the most widely used illegal drug in the world, with the predicted number of users exceeding 200 million people (UNODC, 2015). Within Europe, it is estimated that a quarter of the population aged between 15-64 years have tried cannabis, with nearly 7% indicating they have consumed it in the past year (EMCDDA, 2016). This frequency of use far surpasses the use of other illegal drugs: cocaine, the second most frequently used drug, is reported to have a lifetime use of 5.1%, with only 1.1% claiming to have consumed the drug in the past twelve months (EMCDDA, 2016).

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