Chronic marijuana use disrupts the brain's natural reward processes, according to researchers at the Center for BrainHealth at The University of Texas at Dallas.
A survey of more than 216,000 adolescents from all 50 states indicates the number of teens with marijuana-related problems is declining. Similarly, the rates of marijuana use by young people are falling despite the fact more U.S. states are legalizing or decriminalizing marijuana use and the number of adults using the drug has increased.
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International research led by the University of Adelaide has for the first time shown a direct link between continued marijuana use during pregnancy and pre-term birth.
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A new study by RTI International found that marijuana users who were high at the time they took the survey had substantially higher odds of believing it was safe to drive while under the influence.
Drugs, alternative therapies, medical devices and medical marijuana are discussed in this session open to epilepsy patients and families, pet owners, veterinarians and physicians.
In this opinion piece, Fernanda Alonso, an Associate at the O'Neill Institute for National and Global Health Law at Georgetown University, discusses Mexico’s marijuana policy changes.
In the United States, prenatal alcohol exposure (PAE) is the most common preventable cause of developmental delay. Animal studies have shown some of the adverse effects of PAE on placental development, but few studies have examined these effects in humans. This is the first study to examine the effects of prenatal exposure to methamphetamine, marijuana, and cigarette smoking on human placental development.
A study from Massachusetts General Hospital (MGH) researchers finds that the brains of young adult marijuana users react differently to social exclusion than do those of non-users. In a report published in the March issue of Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, the team reports that activation of the insula, a region of the brain that is usually active during social rejection, was reduced in young marijuana users when they were being excluded from participation in virtual game of catch.
As more states decriminalize recreational use of marijuana and expand its medical applications, concern is growing about inaccurate dosage information listed on edible products. So, scientists have developed a technique that can more precisely measure cannabis compounds in gummy bears, chocolates and other foods made with marijuana. They say this new method could help ensure product safety. The researchers present their research today at the 251st National Meeting & Exposition of the American Chemical Society.
A Colorado State University study suggests that cannabis use significantly affects the ability to recognize, process and empathize with human emotions like happiness, sadness and anger.
Out-of-towners using marijuana in Colorado -- which has legally allowed sales of the drug in retail dispensaries since 2014 -- are ending up in the emergency room for marijuana-related symptoms at an increasing rate, reports a new study from Northwestern Medicine and the University of Colorado.
Washington University School of Medicine researchers report an estimated 12.5 percent of adults living in the United States use marijuana, but their research also shows that the rate of pot use did not double from 2002 to 2013 — as had been reported in the fall — but instead increased by about 20 percent. Meanwhile, the rate of problems related to the drug has remained steady.
Desperate for relief, parents are taking unusual steps to help children plagued with seizures. The relief, however, comes in a most unlikely form: marijuana.
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 arrests but an increase in treatment admissions, according to an update in the January/February Journal of Addiction Medicine, the official journal of the American Society of Addiction Medicine (ASAM). The journal is published by Wolters Kluwer.
A Johns Hopkins Bloomberg School of Public Health analysis of registered medical marijuana users found that a hodgepodge of law and policy changes since 2001 had varying effects on the number of people consuming what in many states remains an otherwise illegal drug for its purported health benefits.
Combining the drug topiramate with psychological counseling curbed marijuana use among young smokers significantly more than did counseling alone, according to newly published results of a small randomized, controlled trial at Brown University. The results come with a caveat, however: many study volunteers couldn't tolerate the medicine's side effects.
Children and young adults with severe forms of epilepsy that does not respond to standard antiepileptic drugs have fewer seizures when treated with purified cannabinoid, according to a multi-center study led by researchers from UCSF Benioff Children’s Hospital San Francisco.
Several studies have demonstrated that the primary active constituent of cannabis, delta-9-tetrahydrocannabinol (∆9-THC), induces transient psychosis-like effects in healthy subjects similar to those observed in schizophrenia. However, the mechanisms underlying these effects are not clear.
Article Body 2010 Genetic variation within the endocannabinoid system may explain why some survivors of childhood adversity go on to become dependent on marijuana, while others are able to use marijuana without problems, suggests new research from Washington University in St. Louis. “We have long known that childhood adversity, and in particular sexual abuse, is associated with the development of cannabis dependence.
Medical marijuana needs to be studied like any other drug. No one is opposed to the active ingredients in it, but we need to have some data. That is what we would expect from any other drug, Bednarczyk says.
With increased legalization of marijuana for medicinal and recreational purposes, interest is growing in the potential health effects of its secondhand smoke. A team now reports in ACS' journal Analytical Chemistry the development of a urine screening method that is sensitive enough to detect even small amounts of chemicals that result from this exposure.
Ohio could be the largest state in the country, and the first in the Midwest, to legalize marijuana when voters go to the polls on Nov. 3. But according to a new Bowling Green State University statewide poll of likely voters, the issue is too close to call.
A new group at the University of Washington School of Law will spend the 2015-16 academic year studying existing and emerging markets for marijuana, to assist and inform the state as it prepares to blend current medical and recreational markets for cannabis.
The marijuana extract tetrahydrocannabinol (THC) isn't effective in preventing nausea and vomiting after surgery in patients at high risk of this common complication, reports a study in Anesthesia & Analgesia.
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 decriminalization of the drug and the approval of its recreational use in a handful of places, new research suggests.
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Daily marijuana use among the nation's college students is on the rise, surpassing daily cigarette smoking for the first time in 2014.
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 study published by the American Psychological Association.
The Mount Sinai Health System will work with Columbia Care LLC, a provider of medical marijuana, on research projects that evaluate the potential of related, experimental treatments.
A new University of Michigan study finds that teens using marijuana for medical reasons are 10 times more likely to say they are hooked on marijuana than youth who get marijuana illegally.
Other topics include genetics to predict prostate cancer, Facebook and body image, bioengineered immune cell response, and more...
New research reported in The Journal of Pain, published by the American Pain Society (www.americanpainsociety.org, shows that inhaled cannabis reduces diabetic neuropathy and the analgesic effect is dose-dependent.
Other topics include neurology, obesity, statins, and the risks of wearing high heels.
Other topics include; do x-rays really cause cancer? And more.
While cannabis alters the functions of neurobiological circuits controlling appetite, its effect on weight gain is complex since several factors appear to be involved, says Didier Jutras-Aswad, University of Montreal professor and researcher at the CHUM Research Centre.
A new study, published in the American Journal of Drug and Alcohol Abuse by researchers affiliated with New York University's Center for Drug Use and HIV Research (CDUHR), examines how reasons for illicit marijuana use relates to the use of other drugs individually, rather than grouping them into a single “illicit drug” group.
Other topics include weight loss, medical marijuana, smart traffic lights, diabetes, heart disease, and more.
Other topics include dietary guidelines, smart traffic lights, breast cancer, and biomarker tests for cancer treatment.
A new study conducted at the University of Iowa’s National Advanced Driving Simulator has found drivers who use alcohol and marijuana together weave more on a virtual roadway than drivers who use either substance independently. However, the cocktail of alcohol and marijuana does not double the effect of the impairment.
In an analysis of the findings of nearly 80 randomized trials that included about 6,500 participants, there was moderate-quality evidence to support the use of cannabinoids (chemical compounds that are the active principles in cannabis or marijuana) for the treatment of chronic pain and lower-quality evidence suggesting that cannabinoids were associated with improvements in nausea and vomiting due to chemotherapy, sleep disorders, and Tourette syndrome, according to a study in the June 23/30 issue of JAMA.
An analysis of edible medical marijuana products from 3 major metropolitan areas found that many had lower amounts of key substances than labeled, which may not produce the desired medical benefit, while others contained significantly more of a certain substance than labeled, placing patients at risk of experiencing adverse effects, according to a study in the June 23/30 issue of JAMA.
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