A recent study published in the International Journal of Drug Policy suggests that people taking psychoactive medications and drugs for chronic pain tend to prefer medical cannabis over other drugs. Some research shows that states with access to medical marijuana could reduce opioid abuse. Between 1999 and 2015, over 183,000 people died of an opioid overdose, but now the most common drug substituted for opioids is cannabis. Cannabis is also a common substitute for non-medical drugs including alcohol and tobacco as well as more traditional prescription drugs. Some medical marijuana users even claim that it works better than these traditional drugs.