Articles tagged with Cannabis
A study by The Miriam Hospital's Center for Behavioral and Preventive Medicine found that nearly a quarter of first-year college women try hookah smoking for the first time during their freshman year. Alcohol consumption is linked to an increased likelihood of hookah initiation, while marijuana use predicts frequency of use.
A large international study found that marijuana use during pregnancy more than doubles the risk of premature birth. The study identified strong family history, pre-eclampsia, vaginal bleeds, and diabetes as major risk factors for spontaneous preterm birth.
Researchers from the University of Saskatchewan have discovered the chemical pathway used by cannabis to produce bioactive compounds called cannabinoids. This breakthrough could lead to the development of marijuana varieties for pharmaceutical use or cannabinoid-free industrial hemp.
Researchers discovered commercial rodenticide in dead fishers in Humboldt County and Yosemite National Park, linked to illegal marijuana farms. The poison, anticoagulant rodenticides, can cause uncontrollable bleeding and is toxic even after a single ingestion.
A new study found no correlation between medical marijuana dispensaries and higher crime rates in Sacramento neighborhoods, challenging growing concerns about the impact of dispensaries on crime. The study looked at violent and property crime rates in 95 areas with varying density of medical marijuana outlets.
A randomized controlled trial found smoked cannabis to be effective in reducing spasticity and pain in people with treatment-resistant multiple sclerosis. However, the study also showed that smoking cannabis was associated with acute cognitive impairments.
A clinical study at the University of California, San Diego School of Medicine found that smoked cannabis reduced symptoms of multiple sclerosis, including improved spasticity and pain. However, the study also reported short-term adverse cognitive effects and increased fatigue.
Researchers found gabapentin significantly reduces cannabis use and withdrawal symptoms, improving cognitive skills. The study suggests gabapentin could become first FDA-approved treatment for cannabis dependence.
An online survey of over 3,500 young adults aged 18-25 found that half had smoked cannabis in the past 30 days, with co-use of tobacco and marijuana highest among Caucasians and daily smokers. The study suggests that 'stop smoking' campaigns should factor in cannabis use to their treatment plans.
A recent survey conducted by UCSF researchers found that half of young adult tobacco smokers also use marijuana, with usage highest among Caucasians and rural residents. The study suggests that smoking cessation programs should take into account the effect of marijuana use in their treatment plans.
A recent study found that illicit drug use among 50- to 64-year-olds in England has significantly increased, with lifetime cannabis use rising from 1.0% in 1993 to 11.4% in 2007. Recent cannabis use also showed a substantial increase. Other illicit drugs used were less common.
A study published in Cyberpsychology, Behavior and Social Networking found that online gamblers reported more frequent and problematic drinking and cannabis use compared to offline-only gamblers. The research suggests that online gambling may be associated with increased risks of substance-related behaviors.
Researchers at UCI found that blocking an endocannabinoid compound called 2-AG boosts fat burning and leads to weight loss in mice. The study suggests that this natural chemical plays a critical role in energy metabolism, and blocking its production may lead to new treatments for obesity.
Researchers found no association between intrauterine cocaine or marijuana exposure and lower academic achievement scores. However, children exposed to low levels of alcohol showed decreased scores in math reasoning and spelling, even after controlling for other factors. These findings suggest that children with histories of low-level ...
Researchers found that bullies and bully-victims were more likely to use substances than victims and non-involved youth. The study suggests a relationship between substance use and bullying behavior, particularly among middle school students.
Researchers have identified a mechanism by which cannabinoids in cannabis affect working memory, involving decreased neural connections in the hippocampus. Cannabinoid receptors, particularly those in astroglial cells, modulate synaptic plasticity and impair spatial working memory.
Researchers found that marijuana's psychoactive ingredient THC impairs working memory independently of its effects on neurons. The study suggests that astroglia play an unexpected role in memory and may hold the key to developing treatments for conditions like Alzheimer's.
A study of 5,115 participants found that occasional marijuana use was not associated with adverse effects on lung function. Higher FVC and FEV1 were observed in those with higher lifetime exposure to marijuana.
A new study published in the Journal of the American Medical Association found that occasional marijuana use is not associated with long-term loss of lung function. Marijuana smoke was shown to increase lung air flow rates and capacity, but only up to moderately high levels of use.
Research has found an association between marijuana use in young males and the development of cyclic vomiting syndrome (CVS), which shares clinical features with functional vomiting. CVS is more common among young males using marijuana, highlighting the need for further research into treatment options for this condition.
A study found that marijuana ingredients Δ9-THC and CBD affect different regions of the brain during visual processing tasks. Δ9-THC increased psychotic symptoms by modulating prefrontal and striatal function, while CBD enhanced response to salient stimuli.
Teenage cigarette and alcohol use has declined to its lowest point since the survey began in 1975, with 18.7% of 12th-graders reporting current cigarette use. However, alternate tobacco products, marijuana, and prescription drug abuse continue to be concerns, with high rates of abuse reported among teens.
A recent UCSF study suggests that combining cannabinoids with opiates may lead to greater pain relief for chronic pain patients. The study found that patients who received both treatments experienced significant reductions in pain scores, with some showing a 33% decrease in morphine use.
The 2011 Ontario Student Drug Use and Health Survey reveals declining teen smoking rates, with 9% of students smoking cigarettes compared to 12% in 2009. Binge drinking and driving after cannabis use remain concerns, with 22% of teens reporting hazardous drinking behaviors and 16% being drunk or high at school.
Research found a strong link between high childhood IQ and subsequent illicit drug use, particularly among women. High IQ scores at age 5 or 10 were associated with increased use of cannabis, cocaine, and other drugs by age 30.
A Wayne State University researcher is conducting studies to understand the differences in marijuana use among three subgroups of HIV-positive patients. The goal is to address knowledge gaps and inform decision-making at a state level, potentially guiding treatment and policy.
A recent Rhode Island Hospital study found no statistically significant difference in adolescent marijuana use between Rhode Island and Massachusetts after the state's medical marijuana legalization in 2006. The study of over 32,570 students from 1997 to 2009 suggests that concerns about increased youth use may be unfounded.
Research by University of Bristol neuroscientists found that cannabis disrupts coordinated brain waves, leading to impaired decision-making and memory. The study suggests that 'disorchestrated brains' may contribute to psychiatric diseases like schizophrenia.
Researchers have sequenced the DNA of a potent marijuana strain and compared it to hemp, revealing the genetic differences that lead to marijuana's psychoactive effects. The study found that domestication and breeding of marijuana strains resulted in the loss of an enzyme responsible for producing non-psychoactive compounds.
Researchers sequenced Hemp (Cannabis sativa) genome, revealing the genetic changes that led to marijuana's psychoactive properties. The study suggests domestication and breeding of marijuana strains resulted in the loss of an enzyme competing with THCA production.
A meta-analysis of nine epidemiologic studies found that marijuana use by drivers significantly increases the risk of car accidents. Drivers who test positive for marijuana or report driving within three hours of use are more than twice as likely to be involved in crashes.
Researchers at Temple University found that cannabidiol, a non-psychoactive compound in marijuana, can prevent the onset of neuropathic pain caused by chemotherapy drugs. The study's lead author notes that cannabidiol may be an effective therapeutic for breast cancer patients experiencing debilitating pain.
Researchers found that administering synthetic marijuana helps block PTSD-like symptoms in rats after experiencing trauma. The study suggests a 'window of opportunity' for treatment, which may be longer for humans due to their lifespan.
A study of college athletes and non-athletes found that athletes tend to use marijuana for recreational purposes, whereas non-athletes often use it to cope with stress. However, male athletes who continued to use marijuana during their competitive season reported more anxiety and negative mood.
Researchers found that a brief conversation with an adult led to significant reductions in marijuana use among teenagers who frequently used the drug. The program, called Teen Marijuana Check-Up, was shown to decrease usage by up to 20% over a year, setting a promising model for schools and counselors.
A recent study found that about 25% of drivers who died in crashes tested positive for drugs, with marijuana and stimulants being the most common. The study suggests that while other drugs contribute to road deaths, alcohol remains the largest contributor to fatal crashes.
Researchers used molecular imaging to visualize changes in the brains of heavy marijuana smokers versus non-smokers, finding a decreased number of cannabinoid CB1 receptors. Chronic cannabis smoking caused downregulation of these receptors, but they returned to normal when subjects stopped smoking.
A study of Aboriginal youth in Canada found they use tobacco, illicit drugs, and alcohol at higher rates than non-Aboriginal youth, leading to increased health risks. The research highlights the need for culturally appropriate smoking cessation and substance prevention programs targeting Aboriginal youth.
A recent study by University of Western Ontario researchers has identified a critical brain pathway responsible for the effects of cannabinoid drugs on emotional processing. The findings suggest that activating cannabinoid receptors in the amygdala region can significantly impact emotional information and memory processes.
Researchers found that people who used marijuana performed significantly worse in attention, speed of thinking, executive function, and visual perception, with some scoring approximately one third lower than non-users. The study suggests that prolonged marijuana use may add to the cognitive burden already experienced by MS patients.
A Vanderbilt study found that exercise significantly reduced cannabis cravings and use in heavy users. Participants who engaged in 10-30 minute treadmill sessions for two weeks saw a 50% decrease in cravings and average daily use dropped from 5.9 joints to 2.8 joints.
A recent review by Dr. Rany Shamloul reveals a potential link between cannabis use and negative impacts on male sexual health and performance. Cannabis may have an antagonizing effect on receptors in the penis, making it harder to achieve and maintain erections.
A recent study found that the federal anti-drug campaign 'Above the Influence' successfully reduced marijuana use among teenagers by 12 percentage points compared to those who had not seen the campaign. The researchers believe this is the first independent study to find evidence for the effectiveness of the campaign.
A new meta-analysis of over 20,000 patients shows that cannabis use is associated with an earlier onset of psychotic illness by up to 2.7 years, with possible life-long consequences for brain development and mental health outcomes.
A meta-analysis of 83 studies suggests that cannabis users develop psychosis about 2.7 years younger than non-users. The study supports the view that cannabis precipitates schizophrenia and other psychotic disorders, potentially through genetic and environmental interactions or disrupting brain development.
A study of 1,106 Mexican heritage youth found that perceived ethnic discrimination and acculturation stress increase with age and lead to higher risks of alcohol, cigarette, and marijuana use. The study suggests that prevention programs should address discrimination and encourage effective coping strategies for young people.
A new study reveals that cannabis triggers unique immune cells called myeloid-derived suppressor cells (MDSCs), which promote cancer growth. MDSCs actively suppress the immune system, making users more susceptible to infections and certain types of cancers.
A study found that having an incarcerated father is associated with substantially elevated risks of marijuana and other illegal drug use in adolescence and early adulthood. Young people with incarcerated fathers also exhibited elevated trajectories of marijuana usage, extending into their mid-twenties.
A review of published papers and professional guidelines highlights the challenges healthcare professionals face when caring for patients who use medicinal cannabis. The study suggests that nurses need ongoing support and guidance to provide the best care while respecting patients' rights.
Research from the University of New Hampshire suggests that marijuana use may not lead to illicit drug abuse in young adulthood as previously thought. The study found that life factors such as employment status and stress play a stronger role in determining illicit drug use. In fact, the strongest predictor of illicit drug use is race/...
A new study published in the Canadian Medical Association Journal finds that low doses of inhaled cannabis containing THC offer modest pain reduction and improved moods in patients with chronic neuropathic pain. The study suggests that medical cannabis may be a viable alternative for patients who have not responded to standard therapies.
A randomized controlled trial found smoked cannabis significantly reduces chronic pain intensity, improving sleep quality and anxiety levels. The study used three different potencies of THC and a placebo, with the highest THC level showing the most significant benefits.
Legalizing marijuana in California could lead to a significant drop in prices, with estimates suggesting a reduction of up to 80%. This, in turn, could result in increased consumption as prices fall below those ever studied. The magnitude of the consumption increase is uncertain, but researchers predict it could be substantial.
A study of 3,801 young adults found that those who used cannabis for six or more years were twice as likely to develop non-affective psychosis. The longer duration since first cannabis use was associated with higher risk of psychosis-related outcomes.
Researchers have found a proton channel in sperm cells that allows them to rid themselves of excess protons when resting, enabling their movement in the female reproductive tract. This finding may lead to new ways of controlling male fertility and potentially even male contraception.
Researchers found that students who listen to music with more references to marijuana are nearly twice as likely to have used the drug. The study suggests a real link between marijuana lyrics and use, but notes that other high-risk behaviors were not associated with increased exposure.
A recent study found that genetic factors contribute to both alcohol and marijuana use, with shared genetic influences contributing to dependence symptoms. The research used a large annual survey of high-school students and found strong evidence for a genetic component to marijuana use and dependence.
A systematic review found that cannabis extracts reduced spasticity and improved mobility in multiple sclerosis patients. The study suggests that combined THC and CBD extracts may provide therapeutic benefits for MS spasticity symptoms.
A comprehensive analysis of 17 studies involving over 35,000 participants found a strong, reliable link between parental monitoring and reduced marijuana use in adolescents. Female-only studies showed the strongest effects.
A new UK study found that heavy cannabis use is associated with a higher risk of developing schizophrenia in young people. To prevent one case of schizophrenia, it would be necessary to stop around 2,800 male and 5,000 female heavy users, or over 10,000 and 30,000 light users, respectively.