Blunt smokers beware.

A new study says mixing tobacco and marijuana isn’t a good idea: It can make quitting either drug more difficult.

The research by the Clinical Psychopharmacology Unit of University College London was published recently in the journal Frontiers in Psychiatry.

“Such mixing can increase the risk of dependence,” it concludes, according to a summary.

Researchers looked at responses from 33,687 cannabis users who participated in the 2014 Global Drug Survey. While at least three out of four European respondents mixed tobacco with cannabis, that was rare in the United States (less than 5 percent of American users did this), where more than one out of 10 weed users vaped, the summary says.

A majority of those (61 percent) who didn’t mix tobacco with their weed wanted professional help quitting marijuana researchers found. Eighty percent of those who mixed the drugs wanted help quitting tobacco.

“These results suggest that people who regularly mix tobacco with cannabis are more at risk of psychological dependence than people who use cannabis and tobacco separately, without mixing them,” the summary says.

“Cannabis is less addictive than tobacco,” says lead author Chandni Hindocha, “but we show here that mixing tobacco with cannabis lowers the motivation to quit using these drugs.”

About The Author


Raul Duke has been working as a journalist in Southern California for two decades. The medical marijuana juggernaut is one of his many beats. He's a longtime Westside resident who needs to renew his doctor's recommendation soon. If you have news tips, reach out:

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