Leggett T
Bull Narc. 2006;58(1-2):1-155.
Cannabis is the world's most widely cultivated and consumed illicit drug, but there remain major gaps in our understanding of global cannabis markets. For example, it appears that premium sinsemilla cannabis, often produced indoors in consumer countries, has become more potent in recent years and that its market share is also growing in some areas. This may be leading to greater localization of cannabis markets. It may also be responsible for the increase in the proportion of cannabis users in treatment populations at the international level. Assessing the extent and impact of this trend, however, is hampered both by a lack of international standards on issues such as terminology and by unanswered research questions. In order to arrive at accurate global estimates of the extent of production, there is a need for more scientific data on cannabis yields. On the demand side, more information is required on the question of cannabis dosage and volumes used by both occasional and regular users. Cannabis is not a uniform drug: the impact of using cannabis of differing potencies and chemical compositions needs to be researched. While issues concerning cannabis have been evaluated many times in the past, it remains a highly adaptable plant and, consequently, a dynamic drug, requiring constant reassessment.
大麻是世界上种植和消费最为广泛的非法毒品，但我们对全球大麻市场的了解仍存在重大空白。例如，优质的无籽大麻通常在消费国室内种植，近年来其效力似乎有所增强，并且在某些地区的市场份额也在增长。这可能导致大麻市场更加本地化。这也可能是国际层面治疗人群中大麻使用者比例增加的原因。然而，评估这一趋势的程度和影响受到术语等问题缺乏国际标准以及未解答的研究问题的阻碍。为了准确估计全球大麻产量规模，需要更多关于大麻产量的科学数据。在需求方面，需要更多关于偶尔使用者和经常使用者的大麻剂量和使用量问题的信息。大麻并非单一毒品：需要研究使用不同效力和化学成分的大麻所产生的影响。尽管过去对大麻相关问题已进行过多次评估，但它仍是一种适应性很强的植物，因此也是一种动态变化的毒品，需要持续重新评估。
