Vancouver teens lead in drug and alcohol use

Is this a consequence of Vancouver's drug policy?:

A new survey has found that people between 16 and 25 in this city are more likely to experiment with alcohol and drugs than young people elsewhere in Canada.

The Vancouver Coastal Health Authority says it found 54 per cent of young people who were surveyed had smoked marijuana or cigarettes in the past year, while nine out of 10 had drunk alcohol.

Young men are more likely to try pot, mushrooms and cocaine, while young women use ecstasy more.

One-third said they tried drugs because they were curious and most think pot is the least risky drug.