Stamler R T, Fahlman R C, Keele S A
Bull Narc. 1983 Oct-Dec;35(4):23-32.
Parts of south-west Asia where opium is illicitly produced have recently become the principal source of supply of heroin to Canada, accounting for 79 per cent of this drug on the illicit market. Heroin from parts of south-east Asia is expected, however, to regain a greater share of the market in the next few years. That may result in increased availability of heroin in Canada. The availability of cocaine has increased on the illicit market; some 57 per cent of this drug originated in Colombia in 1982. Cocaine is increasingly abused in Canada by an estimated 250,000 persons, and this trend seems likely to continue in the next few years. Cannabis plant, cannabis resin and liquid cannabis are the most readily available and widely abused illicit drugs. An illicit demand has been created for the more potent preparations of cannabis. The dramatic increase in armed robberies perpetrated by criminal groups to procure manufactured drugs is a relatively new and alarming trend. The illicit drug market in Canada is largely controlled by organized criminal syndicates.
西南亚非法生产鸦片的地区最近已成为加拿大海洛因的主要供应源，在非法市场上占这种毒品的79%。不过，预计东南亚部分地区的海洛因在未来几年将重新占据更大的市场份额。这可能导致加拿大海洛因的供应量增加。可卡因在非法市场上的供应量有所增加；1982年，这种毒品约57%原产于哥伦比亚。在加拿大，估计有25万人越来越多地滥用可卡因，而且这种趋势在未来几年似乎可能会持续下去。大麻植株、大麻脂和液体大麻是最容易获得且滥用最广泛的非法毒品。对药力更强的大麻制剂产生了非法需求。犯罪集团为获取制成毒品而实施的武装抢劫案急剧增加，这是一个相对较新且令人担忧的趋势。加拿大的非法毒品市场在很大程度上由有组织犯罪集团控制。
