Ken C Winters
Worldwide, marijuana is likely the most commonly used “illicit” psychoactive substance. This is certainly the case in the US. The 2015 estimate is that 22.2 million individuals aged 12 or older are current marijuana users (i.e., users in the past 30 days) and the trend data from the National Survey of Drug and Health (NSDUH) survey indicate a general pattern in increased rates over the past decade or so. Among 12th graders, more students smoke marijuana than tobacco. Marijuana’s popularity far surpasses that of all other illicit substances.
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