Of Course Marijuana Addiction Exists. And it’s (Almost) All in your Head.

Marijuana addiction
By on November 30, 2014

Published in full on Substance.com.

Pretty much everyone who has spent time smoking marijuana knows at least one diehard stoner. The guy whose eyes are always red, the girl who doesn’t use the term “wake and bake” ironically, the person who just can’t seem to ever get it together. These heavy smokers might work at a low-level job or they may be unemployed—but everyone who knows them well knows that they are capable of much more, if only they had any ambition.

Is this really addiction? I believe that it is (and I don’t think that’s an argument against legalization). In fact, the reasons why marijuana is addictive elucidate the true nature of addiction itself.  Addiction is a relationship between a person and a substance or activity; addictiveness is not a simple matter of a drug “hijacking the brain.” In fact, with all potentially addictive experiences, only a minority of those who try them get hooked—and people can even become addicted to apparently “nonaddictive” things, like carrots. Addiction depends on learning, context and psychology, not just neurotransmitters.

With two states having already legalized recreational marijuana use and several more considering doing so, understanding the nature of addiction is more important than ever. Partisans on both sides of the debate have made extreme claims here; some legalizers saying there’s no such thing as marijuana addiction, while some prohibitionists claim “cannabis as addictive as heroin.”

Our concepts of addiction, however, come primarily from cultural experience with alcohol, heroin and, later, cocaine. No one has ever argued that opioids like heroin don’t have the potential to cause addiction because the withdrawal symptoms—vomiting, shaking, pallor, sweating and diarrhea—are objectively measurable. Opioids cause physical dependence that is evident when they become unavailable. The same is true for alcohol, where withdrawal is even more severe and can sometimes even be deadly.

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