No kidding?  People who've been using weed for a while now have been reporting this as a possibility for a couple of years now, but no one was listening "because they were unreliable pot-heads".  Yeah, as if that's any worse than the senile demented creeps (who are on alzheimer drugs!) we have in WADC passing laws . . . Good Lord. 

QUOTE FROM ARTICLE:
"The quasi-legalization of recreational pot use there has had a dramatically positive effect on the rate of opioid deaths.As reported by Reason Magazine, since the legalized sale of recreational marijuana began in January 2014 after voters in the state approved a measure permitting it (recreational use still remains against federal law, however), the state has witnessed a 6.5 percent fall in opioid deaths."

https://www.naturalnews.com/2017-10-19-14-years-of-rising-opioid-deaths-in-colorado-reversed-after-marijuana-was-legalized.html