Featured Research

from universities, journals, and other organizations

No evidence medical marijuana increases teen drug use, study suggests

Date:
June 18, 2012
Source:
University of Colorado Denver
Summary:
While marijuana use by teens has been increasing since 2005, an analysis of data from 1993 through 2009 by economists at three universities has found no evidence linking the legalization of medical marijuana to increased use by high school students.

While marijuana use by teens has been increasing since 2005, an analysis of data from 1993 through 2009 by economists at three universities has found no evidence to link the legalization of medical marijuana to increased use of the drug among high school students.

Related Articles


"There is anecdotal evidence that medical marijuana is finding its way into the hands of teenagers, but there's no statistical evidence that legalization increases the probability of use," said Daniel I. Rees, a professor of economics at the University of Colorado Denver .

Rees co-authored the study with Benjamin Hansen, assistant professor of economics at the University of Oregon and D. Mark Anderson, assistant professor of economics at Montana State University.

They examined the relationship between the legalization of medical marijuana and marijuana consumption using nationally representative data on high school students from the Youth Risky Behavior Survey (YRBS) for the years 1993 through 2009, a period when 13 states, including Alaska, California, Colorado, Hawaii, Maine, Nevada, Oregon and Washington, legalized medical marijuana. Seventeen states and the District of Columbia now have such laws with legislation pending in seven others.

"This result is important given that the federal government has recently intensified its efforts to close medical marijuana dispensaries," said Hansen, who studies risky behaviors of adolescents and adults. "In fact, the data often showed a negative relationship between legalization and marijuana use."

Federal officials, including the Director of the Office of National Drug Control Policy, argue that the legalization of medical marijuana has contributed to the recent increase in marijuana use among teens in the United States and have targeted dispensaries operating within 1,000 feet of schools, parks and playgrounds.

According to the 2011 report "Monitoring the Future National Results on Adolescent Drug Use," prepared annually by the University of Michigan Institute for Social Research, marijuana use by 10th and 12th graders has risen in the last three years, with roughly one in 15 high school seniors smoking marijuana daily or near-daily. The report, cited in the economists' study, surveyed 46,700 students in the eighth, 10th and 12th grades, in 400 secondary schools.

The new study "Medical Marijuana Laws and Teen Marijuana Use" currently is a non-peer-reviewed working paper made available by the Institute for the Study of Labor (IZA), a private, non-profit independent research institute based in Bonn, Germany, that conducts internationally oriented labor market research.

Researchers examined the relationship between legalization and a variety of outcomes including: marijuana use at school, whether the respondent was offered drugs on school property, alcohol use, and cocaine use. Their results provided no evidence that legalization led to increases in the use of marijuana at school, the likelihood of being offered drugs on school property, or the use of other substances.

In addition to using the national YRBS, the researchers drew on state YRBS data for the period 1993 through 2009 and data from the National Longitudinal Survey of Youth 1997 (NLSY97). None of these sources provided evidence that teenage marijuana use increases with the legalization of medical marijuana.

The YRBS and NLSY97 contain information on self-reported marijuana use. The researchers also analyzed the Treatment Episode Data Set (TEDS), which contains information on whether patients at federally funded drug treatment facilities tested positive for marijuana upon admission. The results suggested that legalization of medical marijuana was unrelated to the likelihood that patients ages 15-20 tested positive for marijuana.

"We are confident that marijuana use by teenagers does not increase when a state legalizes medical marijuana," said Montana State's Anderson, who studies health economics, risky behavior and crime.

Report: http://www.iza.org/en/webcontent/publications/papers/viewAbstract?dp_id=6592


Story Source:

The above story is based on materials provided by University of Colorado Denver. Note: Materials may be edited for content and length.


Cite This Page:

University of Colorado Denver. "No evidence medical marijuana increases teen drug use, study suggests." ScienceDaily. ScienceDaily, 18 June 2012. <www.sciencedaily.com/releases/2012/06/120618102834.htm>.
University of Colorado Denver. (2012, June 18). No evidence medical marijuana increases teen drug use, study suggests. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2012/06/120618102834.htm
University of Colorado Denver. "No evidence medical marijuana increases teen drug use, study suggests." ScienceDaily. www.sciencedaily.com/releases/2012/06/120618102834.htm (accessed October 31, 2014).

Share This



More Mind & Brain News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Studying Effects of Music on Dementia Patients

Studying Effects of Music on Dementia Patients

AP (Oct. 30, 2014) The University of Wisconsin-Milwaukee is studying the popular Music and Memory program to see if music, which helps improve the mood of Alzheimer's patients, can also reduce the use of prescription drugs for those suffering from dementia. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Techy Tots Are Forefront of London's Baby Show

Techy Tots Are Forefront of London's Baby Show

AP (Oct. 28, 2014) Moms and Dads get a more hands-on approach to parenting with tech-centric products for raising their little ones. (Oct. 28) Video provided by AP
Powered by NewsLook.com
Cocoa Could Be As Good For Memory As It Is For A Sweet Tooth

Cocoa Could Be As Good For Memory As It Is For A Sweet Tooth

Newsy (Oct. 27, 2014) Researchers have come up with another reason why dark chocolate is good for your health. A substance in the treat can reportedly help with memory. Video provided by Newsy
Powered by NewsLook.com
Five-Year-Olds Learn Coding as Britain Eyes Digital Future

Five-Year-Olds Learn Coding as Britain Eyes Digital Future

AFP (Oct. 27, 2014) Coding has become compulsory for children as young as five in schools across the UK. Making it the first major world economy to overhaul its IT teaching and put programming at its core. Duration: 02:19 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins