By Alfa · May 5, 2004 ·
  1. Alfa

    In the first rigorous study comparing marijuana use in the Netherlands and
    the United States, researchers have found no evidence that
    decriminalization of marijuana leads to increased drug use. The results
    suggest that drug policies may have less impact on marijuana use than is
    currently thought.

    In Amsterdam, coffeeshops can be licensed to sell hashish and marijuana in
    small quantities for personal consumption by adults. Photo by Janice Tetlow

    The findings appear in the May issue of the American Journal of Public
    Health. Craig Reinarman, professor of sociology at UCSC, coauthored the
    article, "The Limited Relevance of Drug Policy: Cannabis in Amsterdam and
    in San Francisco," with Peter D. A. Cohen, director of the Centre for Drug
    Research (CEDRO) at the University of Amsterdam in the Netherlands, and
    Hendrien L. Kaal, now an instructor at the University of Leiden in the

    The study compared the cannabis (marijuana and hashish) habits of users in
    Amsterdam and San Francisco to test the premise that punishment for
    cannabis use deters use and thereby benefits public health.

    "We compared representative samples of experienced marijuana users to see
    whether the lawful availability of marijuana did, in fact, lead to the
    problems critics of the Dutch system have claimed," said Reinarman. "We
    found no evidence that it does. In fact, we found consistently strong
    similarities in patterns of marijuana use, despite vastly different
    national drug policies."

    Highlights of the study include:

    * The mean age at onset of use was 16.95 years in Amsterdam and 16.43
    years in San Francisco.

    * The mean age at which respondents began using marijuana more than once
    per month was 19.11 years in Amsterdam and 18.81 years in San Francisco.

    * In both cities, users began their periods of maximum use about two years
    after they began regular use: 21.46 years in Amsterdam and 21.98 years in
    San Francisco.

    * About 75 percent in both cities had used cannabis less than once per
    week or not at all in the year before the interview.

    * Majorities of experienced users in both cities never used marijuana
    daily or in large amounts even during their periods of peak use, and use
    declined after those peak periods.

    The Netherlands effectively decriminalized marijuana use in 1976, and it is
    available for purchase in small quantities by adults in licensed coffee
    shops; in the United States, marijuana use carries stiff criminal
    penalties, and more than 720,000 people were arrested for marijuana
    offenses in 2001.

    The study was funded by the U.S. National Institute on Drug Abuse (NIDA)
    and the Dutch Ministry of Health.

    In identical questionnaires administered in Amsterdam and San Francisco
    (cities chosen for their similarities as politically liberal northern port
    cities with universities and populations of roughly 700,000 people), nearly
    500 respondents who had used marijuana at least 25 times were asked
    detailed questions about their marijuana use. The questionnaire explored
    such issues as age at first use, regular and maximum use, frequency and
    quantity of use over time, intensity and duration of intoxication, career
    use patterns, and use of other illicit drugs.

    "In the United States, marijuana policy is based on the assertion that
    strict penalties are the best way to inhibit use," said Reinarman.

    The study's findings cast doubt on that scenario, he said. Despite
    widespread lawful availability of cannabis in Amsterdam, there were no
    differences between the two cities in age at onset of use, age at first
    regular use, or age at the start of maximum use.

    The study found no evidence that lawfully regulated cannabis provides a
    "gateway" to other illicit drug use. In fact, marijuana users i
    n San
    Francisco were far more likely to have used other illicit drugs--cocaine,
    crack, amphetamines, ecstasy, and opiates--than users in Amsterdam, said

    "The results of this study shift the burden of proof now to those who would
    arrest hundreds of thousands of Americans each year on the grounds that it
    deters use," said Reinarman.

    Share This Article


To make a comment simply sign up and become a member!