Marijuana News
February 6, 2016

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updated 10:37pm EST

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February 6, 2016

What's the Impact of New Marijuana Laws? The Data So Far

Feb. 3, 2016 — How has new legislation affected marijuana use in the United States? The best available data suggest that marijuana use is increasing in adults but not teens, with a decrease in marijuana-related ... read more

Marijuana Survey Finds Medical Users More Likely to Consume Edibles and Vaporize

Jan. 28, 2016 — A new study provides some of the first evidence about patterns of marijuana use in states that have legalized medical marijuana. It finds that medical marijuana users are more likely to vaporize or ... read more

What Leads to the Local Adoption and Implementation of Recreational Marijuana Policies?

Nov. 17, 2015 — When states move to legalize marijuana, local governments are faced with enacting -- or in some cases restricting -- the policy change in their jurisdictions. Using Colorado as a case study, a new ... read more

Nov. 5, 2015 — Conducting an economic analysis of drug use is a particularly difficult endeavor, but for one researcher, it just meant taking a look at the history ... read more

Researchers Study Differences in Ischemic Stroke in Marijuana Users

Oct. 26, 2015 — Strokes in young adults who use marijuana are more likely to be caused by stenosis, narrowing of the arteries, in the skull than strokes in non-users, new research shows. Previous studies found an ... read more

'Love Hormone' Helps Produce 'Bliss Molecules' to Boost Pleasure of Social Interactions

Oct. 26, 2015 — The hormone oxytocin, which has been associated with interpersonal bonding, may enhance the pleasure of social interactions by stimulating production of marijuana-like neurotransmitters in the brain, ... read more

More Than 25 Percent of Women Giving Birth Who Test Positive for Marijuana Also Using Other Drugs

Oct. 23, 2015 — As an increasing number of states legalize marijuana for medical or recreational use, health officials expect consumption of tetrahydrocanabis during pregnancy to increase. A new study suggests a ... read more

Heavy Drinkers, Drugs Users Underestimate Their Levels of Consumption Compared to Others'

Oct. 19, 2015 — Heavy drinkers and users of illegal drugs downplay their relative levels of consumption, when comparing themselves to others, reveals research. The research shows that 68 per cent of respondents were ... read more

Sex Is More Likely on Days College Students Use Marijuana or Binge Drink

Oct. 7, 2015 — Undergraduate college students were more likely to have sex on days they used marijuana or binged on alcohol than on days they didn't, new research has ... read more

Multicenter Study Examines Safety of Medical Cannabis in Treatment of Chronic Pain

Sep. 29, 2015 — A Canadian research team has completed a national multicenter study looking at the safety of medical cannabis use among patients suffering from chronic pain. They found that patients with chronic ... read more

Do American Adolescents Approve of Marijuana?

Sep. 16, 2015 — Groundbreaking research suggests that adolescents have become less likely to approve of and use marijuana over the last decade when compared to young adults. This is coming during a time where a ... read more

Teen Marijuana Use Down Despite Greater Availability

Sep. 15, 2015 — Marijuana use among American high school students is significantly lower today than it was 15 years ago, despite the legalization in many states of marijuana for medical purposes, a move toward ... read more

Researchers Document Self-Reported Use of New, Uncommon Synthetic Drugs by Teens, Young Adults

Sep. 15, 2015 — This is the first study reporting on use of a variety of new drugs in a nationally representative U.S. sample. Researchers are confident that use was severely underreported, as the subjects were not ... read more

Medicinal Marijuana: Patients Battle Stigma and Misunderstanding

Aug. 28, 2015 — New research examines the experiences of California residents who have been prescribed medical marijuana and the stigma they experience from public opinion.  The findings indicate that the stigma of ... read more

Cannabis Use May Influence Cortical Maturation in Adolescent Males

Aug. 26, 2015 — Male teens who experiment with cannabis before age 16, and have a high genetic risk for schizophrenia, show a different brain development trajectory than low risk peers who use ... read more

Cannabis and the Brain

Aug. 26, 2015 — Two new studies examine associations between cannabis use and the ... read more

Aug. 18, 2015 — How scientists study the effects of marijuana on the brain is changing. Until recently marijuana research largely excluded tobacco users from its participant pool, but scientists have found reason to ... read more

Places With More Marijuana Dispensaries Have More Marijuana-Related Hospitalizations

Aug. 10, 2015 — People who live in areas of California with a higher density of marijuana dispensaries experience a greater number of hospitalizations involving marijuana abuse and dependence, an analysis has ... read more

Teen Marijuana Use Not Linked to Later Depression, Lung Cancer, Other Health Problems, Study Finds

Aug. 4, 2015 — Chronic marijuana use by teenage boys does not appear to be linked to later physical or mental health issues such as depression, psychotic symptoms or asthma, according to a new study. [NOTE: A ... read more

Teens With Medical Marijuana Cards Much Likelier to Say They're Addicted, but Few Teens Have Them

July 23, 2015 — Teens using marijuana for medical reasons are 10 times more likely to say they are hooked on marijuana than youth who get marijuana illegally, a new study shows. The study is the first to report on a ... read more

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