Medical Marijuana - Reports
04/24/14 | The Impact of State Medical Marijuana Legislation on Adolescent Marijuana Use

Researchers wanted to find out if state medical marijuana laws led to an increase in adolescent marijuana use. They examined past-month marijuana use rates for over 11 million students between the years 1991 and 2011 from states that enacted medical marijuana laws and states in similar regions that had not. Their conclusion was simple; they found no increase in adolescent marijuana use related to the legalization of medical marijuana.

03/27/14 | The Effect of Medical Marijuana Laws on Crime: Evidence from State Panel Data, 1990-2006

Some have argued that medical marijuana legalization poses a threat to public health and safety. A study of the association between state medical marijuana legalization and state crime rates collected by the FBI (yrs. 1990-2006) did not indicate a crime exacerbating effect in those states on any Part I offenses. Alternatively, the results showed that state medical marijuana laws may be correlated with a reduction in homicide and assault rates.

02/26/14 | Do medical marijuana centers behave like locally undesirable land uses? Implications for the geography of health and environmental justice

Marijuana dispensaries in Colorado are not considered to be locally undesired land uses and do not have any more impact on their neighborhoods than do coffee shops, according to new research. Researchers predicted that dispensaries would change the neighborhoods surrounding them for the worse, and even create more crime, but that just wasn’t the case for Paul Stretesky and his team at the CU Denver School of Public Affairs. “We argued a bit among ourselves and divided the data up every way we could think of to find evidence of inequality where we may have missed it ... It simply looks like these are not as undesirable as they are made out to be in the media and by law enforcement," Stretesky said.

09/04/13 | The medical necessity for medicinal cannabis: prospective, observational study evaluating the treatment in cancer patients on supportive or palliative care

07/18/13 | Effects of State Medical Marijuana Laws on Adolescent Marijuana Use

Researchers at the Institute for Child Health Policy at the University of Florida College of Medicine examined what effect, if any, medical marijuana laws have on teen use. U.S. anti-drug officials like the drug czar have said such laws decrease the perception of risk and therefore lead to an increase in teen use. Looking at data from 2003-2011 from Montana, Rhode Island, Michigan, and Delaware, these researchers found "no discernible pattern suggesting an effect on either self-reported prevalence or frequency of marijuana use." They conclude that passage of medical marijuana laws does not measurably affect adolescent marijuana use.

04/26/13 | Do medical marijuana laws increase marijuana use? Replication study and extension.

Replicating a prior study, but controlling for state characteristics and measurement error, researchers found that medical marijuana laws have little discernible impact on teen marijuana use or perceptions of the risk of marijuana use in those states. In fact, their research showed that passage of medical marijuana laws actually resulted in a slight decrease in teen marijuana use.

07/13/12 | Exploring the Ecological Association between Crime and Medical Marijuana Dispensaries

Applying the "routine activities theory" of crime, this NIDA-funded study used data from 95 census tracts in Sacramento to analyze two types of crime (violent and property) in areas with varying concentrations of dispensaries. Results indicated that while factors traditionally understood to lead to increased crime ��_��_��_ large percentages of land zoned for commercial rather than residential use, a high percentage of one-person households, the presence of highway ramps, a higher percentage of the population being ages 15-24 ��_��_��_ were positively associated with crime in those areas, the density of medical marijuana dispensaries was not associated with violent or property crime rates. In their conclusion, the researchers theorize that measures dispensaries take to reduce crime (i.e., doormen, video cameras) may increase guardianship, thus deterring crime.

07/13/12 | Chemopreventive effect of the non-psychotropic phytocannabinoid cannabidiol on experimental colon cancer

This analysis of the anti-cancer properties of cannabidiol, a non-psychoactive constituent of marijuana, studied its effect on mice and found that it reduced polyps, tumors, and other carcinogenic precursors, and in colorectal carcinoma cell lines, "protected DNA from oxidative damage, increased endocannabinoid levels and reduced cell proliferation," leading the authors to conclude that cannabidiol does exert a chemopreventive effect.

07/13/12 | Cannabinergic Pain Medicine: A Concise Clinical Primer and Survey of Randomized-controlled Trial Results

This meta-analysis of 38 other randomized-controlled trials that studied the use of cannabis based treatments found that, of these, 27 (71%) "concluded that cannabinoids had empirically demonstrable and statistically significant pain-relieving effects" while 11 (29%) did not.

07/13/12 | Cannabidiol enhances anandamide signaling and alleviates psychotic symptoms of schizophrenia

This double-blind, randomized trial compared the effects of cannabidiol, a non-psychoactive constituent of marijuana, to amisulpride, a potent antipsychotic, in treatment of acute schizophrenia. Results showed that both treatments were safe and effective, but treatment by cannabidiol involved a much safer side-effect profile and presented greater evidence of long-term clinical improvement.

07/13/12 | Smoked cannabis for spasticity in multiple sclerosis: a randomized, placebo-controlled trial

This placebo-controlled, crossover study on the effects of smoked marijuana on spasticity, a common and difficult to treat symptom of multiple sclerosis, found that marijuana was significantly more effective than placebo at both reducing muscle spasticity and patients' pain sensations.

01/17/12 | State-By-State Laws Report, 2011

State-By-State Laws Report, 2011

09/07/11 | State Medical Marijuana Programs' Financial Information

08/17/11 | Medical Marijuana and Civil Protections

08/16/11 | Key Aspects of State and D.C. Medical Marijuana Laws

07/28/11 | Potential Objections to Medical Marijuana

07/28/11 | Federal Obstruction of Medical Marijuana Research Memo

07/28/11 | The FDA and Medical Marijuana

07/28/11 | Effective Arguments for Medical Marijuana Advocates

01/26/10 | Medical Marijuana Briefing Paper

Medical marijuana briefing paper from the Marijuana Policy Project


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