Marijuana is the most used illegal drug worldwide but addiction to legal painkillers kills the most people, according to new research.
Scientists found that cannabis was used more than cocaine and heroin in the first ever study of world-wide drug use.
But experts from the University of Washington found that opioid painkillers such as vicodin, oxycontin and codeine caused more than half of the estimated 78,000 drug-related deaths worldwide.
Read more...Marijuana is the most used illegal drug worldwide but painkiller addiction kills more people | Mail Online
