percent authorities seized more of the drug than ever before meanwhile north america's opioid crisis shows no sign of improving record numbers of overdose deaths from drugs like fentanyl were reported in both the united states and canada the world drug report also revealed that cannabis is still the most widely used illicit drug worldwide in 2016 around 188000000 people reported having used it in some form that number is expected to rise and keep rising as it loses its illicit status with increasing states and countries legalizing the drug. use science correspondent there equal humans is with us here to talk us through the report morning derek so the u.n. says there's been a 15 percent jump in people who need treatment for drug abuse that's nearly 5000000