Since Colorado legalized recreational marijuana, the number of opioid prescriptions for pain fell significantly compared with two states where access to cannabis for adult-use is still illegal, a new study found.

While a robust body of research has demonstrated a link between legal access to medical marijuana and lower use of opioids, less is known about how broader adult-use laws affect the prescribing rates of pharmaceuticals used for pain management. Researchers at the Geisinger Commonwealth School of Medicine in Pennsylvania and the University of New England in Maine were interested in addressing this gap in the literature.

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