Study: Heavy Marijuana Users Face Tough WithdrawalJanuary 29, 2008
Research Summary
Withdrawal from heavy marijuana use is about as harsh for users as withdrawal from nicotine addiction is for tobacco users, according to researchers at Johns Hopkins University School of Medicine.
Researchers drew their conclusions from a study of 12 men and women who smoked marijuana at least 25 times a month and smoked at least 10 cigarettes per day. Participants were instructed to quit using cigarettes, marijuana, or both during the five-week study period, then self-reported on their withdrawal symptoms.
Lead study author Ryan Vandrey, Ph.D., and colleagues found that subjects reported withdrawal symptoms of similar frequency and intensity for marijuana and tobacco abstinence. Common symptoms included irritability, anger, and sleep disruption.
"These results indicate that some marijuana users experience withdrawal effects when they try to quit, and that these effects should be considered by clinicians treating people with problems related to heavy marijuana use," said Vandrey.
The study appears in the January 2008 issue of the journal Drug and Alcohol Dependence.

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