Chapter 32.Cannabis Policy and Use
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Excerpt
Legal access to cannabis in the United States, whether for medical or recreational purposes, has changed dramatically since the late 1990s, driven mostly by reforms at the state level. As of 2018, it became more common for states to have medical cannabis programs than to not have them. Additionally, almost a dozen states now allow legal recreational access for adults. Our nation has not had such widespread legal access to cannabis for almost 100 years. Many important questions remain unanswered, such as how this expanded access to what has become a multitude of cannabis-based products will change rates of 1) adolescent and adult use, 2) adverse events due to cannabis use (e.g., motor vehicle accidents, unintentional poisonings [Cooper and Williams 2018]), and 3) development of cannabis use disorder and related treatment admissions. In this chapter we provide a brief history of cannabis laws in the United States and the ever-evolving medical and recreational markets.
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