Articles tagged with Cannabis
A new study found that exposure to cannabis and stress during adolescence can lead to long-term anxiety disorders. The researchers observed impaired fear extinction in adult mice treated with THC and exposed to stress, suggesting a deregulation in the circuit that regulates fear.
Universal screening of individual blood donations for Zika virus is not cost-effective in the 50 US states during the first year. Screening was only cost-effective in high mosquito season in Puerto Rico, and finding suggests revisiting universal blood screening policy.
The study reveals that herbal cannabis THC concentrations increased by 5% annually from 2006 to 2016, while cannabis resin THC levels rose rapidly from 10% to 17% between 2011 and 2016. This shift may offset the potential therapeutic benefits of CBD.
Research from Duke University Medical Center found that cannabis use affects epigenetics, altering DNA methylation and structural changes in sperm. The study's findings raise concerns about the potential genetic impact of cannabis on children born to fathers who have used the substance.
Researchers at Indiana University found that CBD worsens glaucoma by raising eye pressure in mice. The study suggests a need to understand potential side effects of CBD, especially in children.
The 2018 Monitoring the Future survey found a dramatic increase in teen vaping, with over 1 in 10 eighth graders and nearly 20% of high school seniors using nicotine vapes. Meanwhile, opioid misuse has dropped to record lows, with only 3.4% of 12th graders reporting past-year use.
Researchers discovered that genetically vulnerable mice exposed to marijuana showed increased inflammation in brain cells linked to serious mental illnesses. The study suggests that marijuana's brain-damaging effects may be more pronounced in teens with a specific genetic mutation.
A new study led by an Iowa State University researcher found that higher average potency cannabis at first use increases the risk for the first symptom of cannabis use disorder within a year. Individuals who started using cannabis with 4.9% THC had 1.88 times higher risk, while those with 12.3% THC had 4.85 times higher risk.
A survey of dermatology providers found that they are interested in learning about and recommending cannabinoids as treatments for conditions like psoriasis and atopic dermatitis. Despite their enthusiasm, many expressed concerns about societal stigmas surrounding cannabis use, highlighting the need for further education and research.
A new drug has been shown to reduce cannabis withdrawal symptoms and increase abstinence in those trying to quit, according to a Yale-led study. The medication works by inhibiting the enzyme that degrades anandamide, a brain chemical that acts on brain cannabis receptors.
A phase 2 trial of 70 men with cannabis dependence or use disorder found that an experimental drug reduced cannabis use and withdrawal symptoms compared to placebo. The drug, PF-04457845, works by blocking an enzyme that breaks down a natural endocannabinoid chemical in the brain.
A new study by Johns Hopkins Medicine reveals that vaping cannabis can deliver greater amounts of THC, the primary intoxicant in cannabis, increasing the likelihood of adverse reactions. Vaping is thought to be safer than smoking but may not be suitable for infrequent users.
A study of 17 healthy adults found that smoked and vaporized marijuana produced different cognitive and psychomotor effects. Vaporized cannabis resulted in stronger psychoactive effects and higher blood concentrations of THC compared to equal doses of smoked cannabis.
A study by North Carolina State University found that women are more likely to support strict marijuana policies due to their religious beliefs and lower rates of cannabis use. Mothers, in particular, do not differ from childless women in terms of their views on marijuana policy or reported use.
New research suggests that adolescents with conduct problems are more likely to use cannabis and develop a disorder. The study found no link between cannabis use and increased behavior problems among teens.
Researchers created a cannabis chromosome map, detailing gene arrangement on chromosomes, published in Genome Research. The study reveals ancient colonization by viruses, which influenced the production of THC and CBD, lesser-known cannabinoids.
Researchers at Columbia University's Mailman School of Public Health found that teens increasingly choose pot over alcohol and cigarettes. The average school grade during which young people first tried alcohol and cigarettes has increased, with a significant drop in the proportion who used cigarettes before marijuana.
A study published in Pediatrics found that nearly half of children exposed to second-hand marijuana smoke had detectable levels of THC, a reliable indicator of exposure. Researchers also discovered that third-hand smoke exposure can occur when individuals smoke and the residue lingers on their skin, hair, or clothes.
A recent University of Waterloo study found that high school students with positive mental health are less likely to consume cannabis. The study suggests that marijuana prevention programs should focus on promoting mental wellbeing instead of abstinence.
A study analyzed over 1,000 social media posts from six recreational marijuana companies in Washington state to assess compliance with regulations. Most posts were found to be consistent with state rules, but some promoted therapeutic benefits or appealed to youth, highlighting the need for warnings on intoxication and age restrictions.
Research shows secondhand marijuana smoke can worsen asthma symptoms in children with cannabis allergies, even without direct exposure. After removing cannabis from the home, asthma symptoms improved significantly.
A recent study published in Clinical Kidney Journal found that marijuana use by live kidney donors had no measurable impact on the outcomes of kidney transplants. The study, which reviewed over 290 living donor medical records, also showed no long-term differences in kidney function between marijuana users and non-users.
Researchers found that adolescent marijuana use reduces perineuronal net formation around inhibitory cells, affecting decision-making and self-control. This alteration may have long-term consequences for brain function and behavior.
Research finds that prenatal exposure to THC can impair learning and memory in adolescents, while also improving symptoms in Alzheimer's disease patients. Long-term cannabinoid use alters brain metabolism and connectivity in adults, raising concerns for vulnerable populations.
Researchers at Washington State University have found that heavy cannabis use during pregnancy can affect the cognitive development of offspring. The study used a new model of exposure to recreate human-like cannabis use and found that rats exposed to high amounts of cannabis had trouble adjusting their strategy to get rewards.
A Drexel University-led research project aims to study the health and behavioral effects of medical marijuana use for young adults in Los Angeles. The study, which has been renewed for five years, will track how the state's changing cannabis laws impact public health.
A study found that one month of abstinence from cannabis improved memory functions among adolescents and young adults, including the ability to learn and recall new information. Cognitive improvement occurred largely during the first week of abstinence, suggesting that abstaining from cannabis helps young people learn efficiently.
Students from lower-income neighborhoods who attended top-performing Los Angeles County high schools were less likely to abuse marijuana. Attending one of these schools was linked to lower marijuana use, fewer peers abusing drugs, and improved academic performance.
The article discusses the rise of cannabis-intoxicated driving in the US and challenges surrounding detecting THC levels. Stoned-driving poses a significant accident risk, particularly when combined with alcohol or other substances.
A new review of animal studies reveals that sex differences in response to cannabis are not just socio-cultural, but biological too. Estradiol affects control of movement, social behavior and filtering of sensory input via modulation of the endocannabinoid system.
A team of scientists at McGill University Health Centre has identified the effective dose of cannabidiol (CBD) for safe pain relief without the risk of addiction or euphoria. The study found that low doses of CBD alleviate both pain and anxiety in animal models of chronic pain, offering a potential alternative to THC and opioids.
A new study finds that 12% of frequent marijuana smokers experienced Cannabis Withdrawal Syndrome, including symptoms like nervousness, hostility, and sleep difficulty. The study also links CWS to psychiatric disorders, mental disability, and a family history of depression.
The long-term effects of smoked cannabis on lung health are unclear due to conflicting research findings. The authors emphasize the need for well-designed studies to address pressing gaps in knowledge and resolve lingering myths.
A randomized, placebo-controlled study has shown that cannabis oil can produce clinical remission in up to 65% of individuals with moderately severe Crohn's disease after 8 weeks of treatment. However, the improvement does not appear to result from a dampening down of the underlying inflammatory process.
A study of US hospital statistics from 2010-14 found a rise in stroke incidence among marijuana users, with rates increasing from 1.3% to 1.5%. Young stroke survivors also face long-term risks, with nearly 3 times the risk of adverse events compared to older patients.
A study found that 40-50% of leading hip-hop music videos from 2013-2017 contained tobacco and marijuana use, with brand placement increasing with song popularity. The prevalence of combustible or electronic use rose with songs' popularity, particularly among young people.
If cannabis use increases after legalization, the Canadian government should alter its act to prevent negative health effects, according to an editorial. The Government of Canada must be vigilant in tracking cannabis usage and provide adequate funding for research into harms.
Leading hip-hop music videos over five years featured tobacco and marijuana use, with combustible products appearing most frequently. The study's findings highlight the genre's influence on youth behavior and contribute to growing public health concerns.
A systematic review and meta-analysis of 17 clinical trials found that medical marijuana reduced subjective patient assessments of spasticity, pain, and bladder dysfunction in patients with multiple sclerosis. However, the therapy may carry a higher risk of adverse events compared to placebo.
A UBC study discovered that many cannabis strains have virtually identical levels of THC and CBD, contradicting their unique street names. The research also found new, previously unknown cannabinoids in low quantities that could be related to pharmacological effects and serve as a source of new medicines.
A recent study published in the American Journal of Psychiatry found that adolescent cannabis use is associated with impairments in learning, memory, attention, and decision-making, as well as lower academic performance. The research team followed a large sample of high school students over four years to investigate the complex relatio...
A survey of 10th-graders in Los Angeles found that most who had ever used cannabis also used multiple types of the drug. Combustible, edible, and vaporized products were popular among adolescents, with many using multiple methods to administer the drug.
A study of 10th-graders in Los Angeles finds that most teens who have tried marijuana use it in multiple forms, including smokable, edible, and vaporized products. The research raises concerns about the health implications of cannabis use among adolescents amid a growing market with sleek packaging and health benefits claims.
The Center for BrainHealth has secured a $225,000 NIH grant to investigate how cannabis use affects motor learning and coordination. The study will examine the effects of acute, prolonged, and long-term cannabis use on motor skills and performance.
A study from Harvard T.H. Chan School of Public Health found that children whose mothers use marijuana during their first 12 years are more likely to start using cannabis earlier than children of non-users. This relationship holds even after controlling for social environmental factors, suggesting a potential risk factor for early init...
A new study from Harvard T.H. Chan School of Public Health found that children whose mothers use marijuana are more likely to start using the drug themselves an average of two years earlier. This can lead to negative consequences such as impairments in concentration and decision-making, increased impulsivity, and reductions in IQ.
A Syracuse University study found that cannabinoid drugs make pain feel less unpleasant and more tolerable, without reducing its intensity. The review of over 1,800 experimental studies suggests an affective component to their analgesic properties.
A 2016 survey of US students found nearly 1 in 11 middle and high school students used cannabis in e-cigarettes. Researchers suggest strategies to reduce cannabis use in e-cigarettes are crucial given the findings
A new study reveals that an online RMV training significantly improved employees' ability to check IDs, recognize intoxicated customers, and use inventory tracking systems. The training was rated as user-friendly and satisfactory by over 75% of trainees.
A new study from Oregon State University found that lesbian, gay or bisexual youth are at higher risk of polysubstance use compared to heterosexual peers. They are more likely to use more than one substance than their peers.
Researchers found that medical cannabis provides immediate symptom relief across various health conditions, including chronic pain and insomnia. Patients reported an average symptom reduction of nearly 4 points on a 1-10 scale following cannabis consumption.
A study by NYU School of Medicine and the Center for Drug Use and HIV/HCV Research found that marijuana use is becoming more prevalent among middle-aged and older adults, with 9% of adults aged 50-64 and nearly 3% of adults 65+ reporting use in the past year. This trend suggests a significant increase in marijuana use over the past dec...
A study published in Neurology found that medical marijuana, specifically THC, reduces connections between brain areas processing emotions and sensory signals, providing pain relief for radicular nerve pain. The more pain relief experienced, the greater the reduction of these brain connections.
A recent study from the Center for BrainHealth at UT Dallas found that cannabis users exhibit increased synchronization and activation of brain waves during rest, compared to nonusers. This 'noisy brain' may disrupt cognitive processes.
Chronic inflammation caused by failed sensor mechanism can lead to brain cells' loss in old age. The study suggests that CB1 receptors on neurons control microglial cell activity.
The study examines the prevalence and types of psychoactive substances used in Albania, revealing a significant increase in drug users since 2012. Cannabis is the most commonly used substance, particularly among young people, while heroin and cocaine also show notable usage.
Researchers at the Center for BrainHealth investigated concurrent cannabis and nicotine use on brain networks. The study found that combined use had greater connectivity compared to isolated use of either substance. These findings suggest unique contributions of cannabis and nicotine on brain network connectivity.
A study by University of California - San Diego found that 63% of breast milk samples from mothers using marijuana contained THC, the primary psychoactive component. The study suggests that while the amount of THC in breast milk is relatively low, more research is needed to understand its potential effects on nursing babies.
A recent survey found that about 4.5% of US adults use e-cigarettes, with higher rates among young adults and those in the LGBTQ community. E-cigarette use also varies by state, with estimates ranging from 3.1% in South Dakota to 7% in Oklahoma.
Viral suppression rates have nearly tripled in the US over the past two decades due to improved treatment regimens. However, disparities persist among younger persons and blacks living with HIV, warranting further research. The study found that these populations were more likely to have detectable viral loads.