Feature Channels: Marijuana

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Young adults’ use of cannabis and alcohol tends to rise and fall together, rather than one substance substituting for the other, according to a new study. Understanding the relationship between cannabis use and alcohol use is critical for informing policy and public health strategies. Legalizing recreational cannabis use has raised the possibility that cannabis may substitute for risky drinking or other substance use, potentially with less severe public health consequences.

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Scientists at Indiana University have found that significant amounts of the two main components of cannabis, THC and CBD, enter the embryonic brain of mice in utero and impair the mice's ability as adults to respond to fluoxetine, a drug commonly known by the brand name Prozac.

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Researchers expose live lobsters to vaporized cannabis and confirm the crustaceans absorb THC. Whether the psychoactive compound affects behavior remains open question.

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“Cannabis” is a high-value cash crop with immense benefits in medicine, health, nutrition, and beauty. As soon as the Thai government had given the green light, Chulalongkorn was ready to join hands with the private sector and concerning government agencies to accelerate the research and development of a vast assortment of cannabis products.

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Not only is cannabis the most commonly used illicit – in a number of states – drug among people who drink alcohol, cannabis is also by far the most commonly used illicit drug in the U.S. overall. New research findings tease out the nuanced relationship between alcohol and cannabis through a survey of regular cannabis users who also report drinking alcohol, as well as heavy drinkers in treatment who also use cannabis. These findings will be shared at the 44th annual scientific meeting of the Research Society on Alcoholism (RSA), which due to the COVID-19 pandemic will be held virtually this year from the 19th - 23rd of June 2021.

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At least so far, the currently limited research base does not establish that cannabis has additional adverse effects on brain development or functioning in adolescents or young adults with attention-deficit/hyperactivity disorder (ADHD), concludes a review in the July/August issue of Harvard Review of Psychiatry. The journal is published in the Lippincott portfolio by Wolters Kluwer.

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A Rutgers expert discusses how the legalization of cannabis could widen gaps in health and social equity for pregnant women, new mothers and their children.

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The SAFE Banking Act was a big step toward removing barriers for cannabis businesses. But Maryland Smith accounting expert and CPA Samuel Handwerger says other obstacles loom. Among them, the tax code.

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Science Snapshots from Berkeley Lab on forest soils, vaping cannabis risks, reusable PPE, hydrogen fuel generation

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Researchers at University of California San Diego School of Medicine found that functional impairments among adults aged 50 and older are associated with a higher risk of medical cannabis use; and prescription opioid and tranquilizer/sedative use and misuse.

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UC San Diego Health is conducting the first known randomized, double-blind, placebo-controlled clinical trial looking at cannabis as a potentially effective treatment for acute migraines.

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A study published in the scientific journal Addiction provides the most comprehensive evidence to date of the association between recreational cannabis laws (RCLs) in US states and responses in the illegal markets for cannabis, heroin, and other drugs in those states.

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During the COVID-19 pandemic, Johns Hopkins Medicine Media Relations is focused on disseminating current, accurate and useful information to the public via the media. As part of that effort, we are distributing our “COVID-19 Tip Sheet: Story Ideas from Johns Hopkins” every other Wednesday.

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The latest news and discoveries from the field of psychological science will be featured at the 2021 Virtual Convention of the Association for Psychological Science (APS), held May 26-27.

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Frequent cannabis vaping, defined as vaping at least 10 times a month, more than doubled among high school seniors in the United States between 2018 and 2019, according to new research from NYU Grossman School of Medicine published online May 4 in the Journal of Adolescent Health.

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A study of 2.4 million hospitalised cannabis users has found that those with an arrhythmia were 4.5 times more likely to die while in hospital than those without.

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Babies born to mothers diagnosed with cannabis use disorder are more likely to experience negative health outcomes, such as preterm birth and low birth weight, than babies born to mothers without a cannabis use disorder diagnosis, report UC San Diego researchers.

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A comprehensive analysis of 80 scientific studies has identified a 'window of impairment' of between three and 10 hours caused by moderate to high doses of the intoxicating component of cannabis, tetrahydrocannabinol (THC).

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Smoking cannabis significantly impairs vision but many users are unaware of it

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Ontario doctors are still hesitant to prescribe medical cannabis to patients suffering long-term pain 20 years after it was first introduced, says a new study carried out at McMaster University.

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For patients undergoing spinal surgery, the diagnosis of cannabis use disorder is associated with higher complication rates, including substantially increased risks of stroke and respiratory complications, reports a study in Spine. The journal is published in the Lippincott portfolio by Wolters Kluwer.

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Topics surrounding asthma and power plant closures, illicit drug use and harm reduction, testing access for homeless, and varied support for pandemic measures will be highlighted in the May 2021 Issue of AJPH.

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The legalization of cannabis and the arrival of nonmedical fentanyl are fundamentally changing drug markets in North America.

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Adolescents who vape cannabis are at greater risk for respiratory symptoms indicative of lung injury than teens who smoke cigarettes or marijuana, or vape nicotine, a new University of Michigan study suggests.

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Using cannabis for relief from migraine headache may be associated with developing “rebound” headache, or medication overuse headache, which occurs when pain medication is overused by patients who have an underlying primary headache disorder such as migraine, according to a preliminary study released today March 1, 2021, that will be presented at the American Academy of Neurology’s 73rd Annual Meeting being held virtually April 17 to 22, 2021.

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Chulalongkorn University’s College of Public Health Sciences held an opening ceremony of the Drug Dependence Research Center at the Chulalongkorn–Saraburi Land Development Project. Guests of honor, Mr. Niyom Termsrisuk, Deputy Permanent Secretary of Justice, and Professor Emeritus Charas Suwanwela, M.D., former Chulalongkorn University President and former President of the University Council, and Prof. Narin Hiransuthikul, M.D., Chulalongkorn University Vice President, attended the opening ceremony and performed the ceremonial cutting of the first medical–grade, organically grown cannabis bouquets.

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Complimentary press passes are now available for the virtual Experimental Biology (EB) 2021 meeting, to be held April 27–30. EB is the annual meeting of five scientific societies bringing together thousands of scientists and 25 guest societies in one interdisciplinary community.

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Lewis Nelson, chair of the department of emergency medicine at Rutgers New Jersey Medical School, and Diane Calello, executive medical director of New Jersey Poison Control Center, based at Rutgers New Jersey Medical School, is available to discuss the health considerations of the legalization of marijuana in New Jersey.

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The aim of the current study is to examine whether communities reporting an increased risk for developing mental health issues showed differential patterns of legal cannabis use as the pandemic began. A secondary goal is to examine the feasibility of using anonymized location data to uncover community consumption patterns of potential concern.

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A new discovery by researchers from Ben-Gurion University of the Negev (BGU) and its affiliated Soroka University Medical Center shows that medical cannabis may reduce blood pressure in older adults.

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A new survey in Annals of Allergy, Asthma and Immunology shows that of those who used cannabis, about half smoked it while a third vaped – both “inhalation routes” likely to affect one’s lungs.

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With more than 65 Featured and Scientific Sessions and 1,000+ presentations showcasing advances in fundamental and translational sciences and emerging disciplines and technologies, the Virtual 2021 Annual Meeting and ToxExpo of the Society of Toxicology (SOT) is the largest forum for toxicological research in the world.

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Findings may have implications for tackling opioid misuse

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When entrepreneurs dream up ideas for new businesses, cannabis use might help, and hinder, their creativity, according to a new study in the Journal of Business Venturing by Washington State University researchers.

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Scientists at Dana-Farber Cancer Institute and the Centers for Disease Control and Prevention have uncovered new evidence of the potential health risks of chemicals in tobacco and marijuana smoke.

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The Icahn School of Medicine at Mount Sinai has launched a new center for psychedelics research. The Center for Psychedelic Psychotherapy and Trauma Research pursues a multipronged clinical and research approach to discovering novel and more efficacious therapies for post-traumatic stress disorder (PTSD), depression, anxiety, and other stress-related conditions in the veteran and civilian population.

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Today, Wolters Kluwer, Health announced the publication of Cannabis: A Handbook for Nurses, the first medical cannabis book written specifically for nurses. The book addresses nursing skills and responsibilities in cannabis care, including the physiology of the human endocannabinoid system, cannabis care as it relates to specific disease processes, the history of cannabis, advocacy and ethics, and the ins and outs of cannabis dosing, delivery methods, side effects, and more.

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Female rats that inhaled vaporized cannabis daily for a month developed a blunted physiological response to stress, according to a new study by Washington State University researchers.

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New research suggests that cannabis use by people in care for opioid addiction might improve their treatment outcomes and reduce their risk of being exposed to fentanyl in the contaminated unregulated drug supply.

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Camille Stewart's article about medical cannabis explains issues around the drug’s legality, makes recommendations for its use before and after surgery and pushes for research on its effects on postoperative patients.

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A landmark study on how cannabis affects driving ability has shown that cannabidiol (CBD), a cannabis component now widely used for medical purposes, does not impair driving, while moderate amounts of the main intoxicating component tetrahydrocannabinol (THC) produce mild driving impairment lasting up to four hours.

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Young adults who combine alcohol and cannabis use experience fewer negative consequences when they stick with a single type of drink versus consuming multiple types of alcohol, according to a new study. In addition, by avoiding cannabis concentrate they may steady or lower their overall consumption. The findings suggest that for those who choose to sustain their levels of alcohol and cannabis use, judicious choice of products may reduce the risks.

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UCLA has received seven grants totaling $6.4 million from the California Bureau of Cannabis Control. The awards will fund studies on topics ranging from the toxicity of inhaled and second-hand cannabis smoke to employment conditions in California’s cannabis industry.

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Before the COVID-19 pandemic, information about the dangers of vaping was emerging. To investigate the potentially serious health and respiratory implications of vaping, Mayo Clinic researchers wanted to better understand the factors influencing vaping in the community.

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New research shows that over the past 50 years street cannabis across the world has become substantially stronger carrying an increased risk of harm.

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Cannabidiol (CBD) oils are equally or less effective at inhibiting the growth of certain cancer cells compared to pure CBD, according to Penn State College of Medicine researchers.

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