Some people who oppose the legalisation of dagga often cite concerns about teenage usage.
However, the real-world example in the US is showing that those fears may be unfounded.
Forbidden fruit tastes the sweetest
Rates of dagga use amongst American teenagers in states that have legalised have dropped to their lowest level in 22 years, according to a survey released by the government this month.
Dagga use among Americans between the ages of 45 and 54 is up 50%, according to the Centers for Disease Control and Prevention.
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Among Americans between the ages of 55 and 64 there is a jump in dagga use of 455%.
Dagga usage among Americans older than 65 is up 333%.