One tobacco-cessation expert said the findings aren’t surprising.
“Among individuals which I have treated, the majority of those who smoke cannabis as well as cigarettes often have a more difficult time quitting, do not want to give up their cannabis use, and are more likely to relapse to cigarette smoking,” said Patricia Folan.
She directs Northwell Health’s Centre for Tobacco Control in Great Neck, New York.
The new research was led by Dr Renee Goodwin of Columbia University School of Public Health in New York City. Her team tracked data on about 35000 American adults who took part in a national survey.