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Using cannabis in multiple forms — smoking, vaping, edibles, dabbing — may be a major red flag for addiction. A new national study found that nearly 67% of "polymodal" users met criteria for cannabis use disorder, compared to just 15% of those who mainly stuck to edibles. Researchers say clinicians should be asking patients how they use cannabis, not just whether they do.
The way you use cannabis may matter as much as how often you use it. A large national study from NYU Langone Health analyzed data from over 17,700 US adults and found that people who consume cannabis in nearly every available form — smoking, vaping, edibles, and dabbing — face dramatically higher rates of daily use and addiction compared to those who stick to one method. Researchers identified four distinct consumption patterns and found striking differences in addiction risk across each group.
The study, published in Addictive Behaviors, also revealed demographic trends: young adults (18–25) were heavily represented among multi-method users, while edible-only users skewed toward women and college graduates. Heavy cannabis smokers were also more likely to smoke cigarettes, raising additional lung health concerns from combined combustion exposure.
By the Numbers:
Why it matters: With over 43.8 million Americans using cannabis monthly, clinicians need better screening tools. Asking how patients consume cannabis — not just if — could be a simple, powerful way to flag those at highest risk for addiction and guide more targeted public health messaging.
