Drug abuse treatment programs typically recommend complete abstinence because of a
fear that clients who stop use of one drug will substitute another. A within-subjects study
investigated whether consumption of alcohol and other substances changes during
marijuana abstinence. Twenty-eight daily marijuana users who were not trying to stop or
reduce their marijuana consumption completed an 8-day baseline period in which they used
marijuana and other drugs as usual, a 13-day marijuana abstinence period, and a 7-day …