Systematically Testing the Evidence on Marijuana

Smoking marijuana at least once a month is linked to an elevated risk of heart attack, according to a new study conducted among nearly 160,000 people in the U.K. The research, published Friday in the journal Cell, looked at more than 11,000 people between ages 40 and...

A new study has found that secondhand cannabis smoke from bongs can be even more harmful than tobacco due to an increased concentration of fine particulate matter. Researchers from the University of California, Berkeley, who published their report on the Jama Open...

In September, a widely-covered study published in JAMA Network Open found that youth use declined after the passage of medical and adult use cannabis laws. But methodological concerns raised by researchers regarding the use of pooled and unweighted data from a...

Obtaining a medical marijuana card may pose a risk for those who use cannabis products to treat pain, anxiety, or depression, according to a Massachusetts General Hospital study. In a significant minority of individuals, researchers found those at greatest risk of developing the addictive symptoms of cannabis use

Nicotine, generally found in tobacco cigarettes, is often the assumed substance of vaping. A recent study by Ruoyan Sun, assistant professor at the University of Alabama at Birmingham’s School of Public Health, shows that 35 percent of 12- to 14-year-olds, 51.3...

Repetitive transcranial magnetic stimulation (rTMS) was associated with a reduction in self-reported cannabis use by up to 60 per cent among people with schizophrenia who have cannabis use disorder (CUD), according to a CAMH-led study just published in the journal NPJ Schizophrenia.

The National Football League is giving UC San Diego $500,000 to study whether cannabis can be effectively used to help athletes manage pain from injuries and to recover more quickly. The research will be done on professional rugby players and will involve...

Young adults hospitalized for a stroke are much more likely to be admitted for a recurrent stroke if they have cannabis use disorder (CUD), new observational research suggests. "Our analysis shows young marijuana users with a history of stroke or transient ischemic...

Despite the perception that marijuana is harmless, there is some scientific evidence challenging that belief, and there are many unanswered questions about its impact on brain health, according to a new American Heart Association scientific statement published today...

Cannabis use can “significantly” impair drivers for up to four hours after use, a new study revealed, stressing the urgency for a better understanding of the effects its use increases around the country. The randomized clinical trial of 191 regular cannabis users in...

The hazards of drunken driving are well known, and a new research review shows that adding pot to the mix only makes matters worse. The analysis of 57 past studies found that the combination of alcohol and marijuana compromised people's driving skills to a greater...

Patients with chronic pelvic pain, vulvodynia, endometriosis, or gynecologic malignancy may use THC, CBD, or a combination of both in an effort to treat their pain, research shows. A recent review in this area identified 16 studies published since 1990 that examined...

If taken in the right way and at the right amount, certain cannabis compounds might prevent or lessen the severity of COVID-19 infection, a pair of recently released studies suggests.

A recent Bloomberg article noted that "Cannabis compounds prevented the virus that causes Covid-19 from penetrating healthy human cells, according to a laboratory study published in the Journal of Nature Products."

On January 19, 2021, our lead PI, Dr. Devan Kansagara, joined OPB’s Think Out Loud to discuss the STEM project. You can listen to the session or read the related article on the OPB website.

The University of Mississippi announced Thursday, Jan. 20, the approval of a new center for medical cannabis research. The National Center for Cannabis Research and Education (NCCRE) will foster and conduct scientific research, data analysis, education and training on...

Some recreational pot shops are using tricks from the old playbooks of alcohol and tobacco companies to target underage users on social media, a new study reports. For the study, the researchers evaluated one year of publicly displayed posts on Facebook and Instagram...

Whole-plant cannabis is linked to a significant reduction in seizures in children with severe treatment-resistant epilepsy, early research suggests.

The findings of a new study suggest that cannabis decriminalization policy reduces the racial disparity in arrests for possession. The study, published in

Children of women who use marijuana during or soon after pregnancy are twice as likely as other kids to become anxious, aggressive or hyperactive, according to a new study.

At a time of increasing legalization of marijuana, a growing number of people under 50 diagnosed with cannabis use disorder were later hospitalized for a heart attack, new research has found.

Researchers at Colorado University will begin a first-of-its-kind study on how cannabis products affect exercise performance.

Teen vaping of marijuana doubled between 2013 and 2020, indicating that young people may be swapping out joints, pipes or bongs for vape pens, according to a new study.

Use of cannabis is common in patients with multiple sclerosis (MS), especially for the treatment of MS-related spasticity, new research suggests.

Forty-seven percent of US adults who use cannabis report medical reasons for use, and many obtain their information about medical cannabis from dispensaries. Merlin et al. report results of a study that surveyed 434 frontline cannabis dispensary workers...

The Washington State University board of regents has voted to approve the establishment of an official research center on cannabis. The newly named Center for Cannabis Policy, Research and Outreach will involve nearly 100 scientists and faculty working on a range of...

Researchers at the University of California San Diego have initiated the first placebo-controlled randomized trial investigating the efficacy of cannabis products for the treatment of acute migraine. Trial participants will be randomized into 4 study groups (placebo,...