Despite efforts to address the opioid crisis, opioid-related overdoses remain a significant contributor to mortality. State efforts to reduce overdose deaths by removing barriers to naloxone have recently focused on pharmacy channels, but the specifics of these laws and the contexts in which...

Almost half of the US states have adopted “medical marijuana” laws (MMLs), and 58% of Americans now favor marijuana legalization. Despite public support, federal law continues to prohibit the use and sale of marijuana due to public health concerns of increased abuse, drugged driving, and...

State-level marijuana liberalization policies have been evolving for the past five decades, and yet the overall scientific evidence of the impact of these policies is widely believed to be inconclusive. In this review we summarize some of the key limitations of the studies evaluating the effects...

We exploit shocks to US federal enforcement policy to assess how legal medical marijuana market size affects youth marijuana use and consequences for youth traffic-related fatalities. Using hand-collected data on state medical marijuana patient rates to develop a novel measure of market size, we...

Despite efforts to address the opioid crisis, opioid-related overdoses remain a significant contributor to mortality. State efforts to reduce overdose deaths by removing barriers to naloxone have recently focused on pharmacy channels, but the specifics of these laws and the contexts in which...