• Cannabis users found to be 5 times more likely to develop alcohol problem
• Marijuana use also increases likelihood of drug dependency, experts say
• They warn pot smokers will also be more likely to develop a smoking habit
• Experts say 'adverse psychiatric outcomes' should be considered by doctors when considering the best treatment for patients Alcoholics, who did not use the drug, were significantly more likely to be seeking treatment in rehab, within three years, according to scientists at Columbia University and the City University of New York.

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