A recent study found that cannabis-related emergency department visits among adolescents and young adults in Ontario rose nearly five-fold between 2003 and 2017. The study highlights an emerging public health problem and emphasizes the need for further research into the causes of this trend.
A recent study published in JAMA Pediatrics has estimated that a significant proportion of e-cigarette users among youth ages 12 to 24 are also vaping cannabis. The study found an association between cannabis vaping and increased risk of mental health issues, highlighting the need for further research and prevention efforts.
Researchers found that young adults with cannabis use disorder are more likely to experience recurrent strokes compared to those without the condition. The study suggests that chronic marijuana use may impair blood vessel function and increase the risk of future strokes.
A new study found that female adults who heavily used cannabis had a lower incidence of diabetes compared to those who did not use cannabis. In contrast, light cannabis use among females and male adults with any level or no cannabis use showed no association with diabetes diagnosis.
Research from the Dunedin Multidisciplinary Health and Development Study finds that prolonged cannabis use leads to over-inflated lungs and increased airway resistance, impairing oxygen extraction. This effect is distinct from tobacco use and may reflect early signs of a severe form of emphysema.
A recent study found that combining cannabis and alcohol significantly worsens driving performance compared to using either substance alone. This is because the effects of cannabis on driving are additive to those of alcohol, leading to impaired lane control and increased crash risks.
A two-year randomized trial found that cannabis use significantly impaired driving ability, particularly in the first few hours after smoking. Despite varying levels of THC content and user history, participants displayed diminished skills on simulated driving tests.
A study found that 31.4% of trauma patients at Hospital das Clínicas in São Paulo, Brazil, tested positive for psychoactive substance use, including alcohol (23%), cocaine (12%), and marijuana (5%). The study contributes to the development of public policies to prevent accidents.
A new study published in Fertility & Sterility found that chronic marijuana use negatively impacts male reproductive health, leading to decreased testicular size and lowered testosterone levels. The Oregon Health & Science University study used nonhuman primates to assess the effects of daily THC consumption on reproductive function.
A recent survey by Johns Hopkins Medicine researchers found that about 22% of young sexual minority males and transgender females engage in transactional sex. The practice is associated with HIV exposure, substance use disorder, and unstable housing. Researchers plan to develop interventions to address economic and social vulnerabilities.
Researchers found that CBN preserves mitochondrial function and prevents oxidative damage to nerve cells, suggesting potential for treating age-related neurodegenerative diseases like Alzheimer's. The compound works independently of cannabinoid receptors, making it a promising therapeutic option.
A systematic review of 43,000 participants found cannabis use leads to acute cognitive impairments that persist beyond intoxication. Cannabis intoxication impairs areas including concentration and memory, with potential consequences for daily life, education, and work performance.
A study published in Science Advances found that cannabidiol (CBD) inhibited SARS-CoV-2 infection in human cells and mice, suggesting its potential as a preventative or early treatment for COVID-19. CBD's effects were confined to high purity doses and specific situations.
A study found that recreational cannabis companies market their products in a way that appeals to children and teens, despite state-based regulations prohibiting it. The marketing is easily viewed by people of all ages on social media platforms.
A Montreal-based study found that alcohol, cannabis, and nicotine use remained stable among 24- to 33-year-olds from before the pandemic to now. However, people with lower education levels and those living alone were more likely to start or increase substance use during COVID-19.
A new study shows that California's legalized marijuana industry has boosted financial institutions' assets and loan activity, but restricted access to banking perpetuates inequities for licensed growers. The research highlights the need for regulatory changes to create new opportunities for both industries.
A large-scale survey of over 500 delta-8-THC users found they experience fewer negative side effects and use it in safer modalities compared to delta-9. The study's findings have significant implications for lawmakers, public health officials, and consumers as more states legalize cannabis while prohibiting delta-8.
Researchers at Massachusetts General Hospital have developed a portable brain imaging procedure using functional near-infrared spectroscopy (fNIRS) to detect acute impairment from THC intoxication. The technique shows promise in distinguishing between impairment and mild intoxication, with accuracy confirmed by machine learning models.
Research finds a heightened risk of bronchitic symptoms and shortness of breath among young adults exposed to secondhand nicotine vapour from e-cigarettes. Exposure to ultrafine particles, volatile compounds, and metals can harm lung tissue.
Emergency department visits for cannabis poisonings in children under 10 increased ninefold after commercial cannabis edibles were legalized, with 39% requiring hospitalization. Researchers found that cannabis legalization overlapped with the COVID-19 pandemic, leading to a surge in cannabis poisoning cases.
A significant increase in emergency department visits due to cannabis exposures among children was found after Canada's recreational cannabis legalization. The study suggests that the introduction of legal edible cannabis products contributed to this trend.
The January issues of American Psychiatric Association journals feature new research on the factors underlying alcohol and cannabis use, as well as their interactions with other psychiatric illnesses. The journals also address disparities in coercive treatment for psychosis and provide insights into mental health services delivery.
Researchers found that CBD shrinks glioblastoma tumors by reducing inflammation and restoring immune balance. The compound also suppresses key proteins involved in tumor growth and spread, making it a potential novel adjunct therapy for glioblastoma patients.
A study published in CMAJ found that people using cannabis during pregnancy and lactation do so to manage symptoms such as nausea and mental health problems. The motivations for use change when they become pregnant, with some stopping due to fear or stigma, while others continue to use it for symptom management.
Researchers at Tel Aviv University successfully treated autism in animal models with medical cannabis oil, improving behavioral and biochemical parameters. The treatment showed significant improvement in compulsive and anxious behaviors, and a decrease in the concentration of the arousing neurotransmitter glutamate.
A new study reveals that cannabis plants can absorb heavy metals from the soil, making them potentially toxic for consumers. The research proposes strategies for growers to avoid heavy metal uptake in their crops, including choosing farmland with low heavy metal content and selecting varieties not bred for phytoremediation.
The Monitoring the Future survey found a significant decrease in illicit drug use among adolescents in 2021, with notable declines in alcohol, marijuana, and vaping use. The survey also reported moderate increases in mental health indicators, highlighting an unexpected consequence of the COVID-19 pandemic.
A case series of 10 children with severe epilepsy found that whole plant medicinal cannabis reduced monthly seizure frequency by an average of 86%. The study suggests that whole plant products may be more effective than CBD products in treating childhood-onset severe treatment-resistant epilepsy.
New research suggests that cannabis use can lead to harmful drug-drug interactions by interfering with two families of enzymes that metabolize a wide range of drugs. This could result in unintended side effects such as toxicity or accidental overdose, particularly for older individuals using medications.
A University of Otago study surveyed 529 students to investigate factors influencing the switch from illicit to lawful cannabis sources. The main facilitator identified was perceived safety, with 63% of respondents citing this as a primary reason for sourcing cannabis through legal channels.
New research from the Prevention Research Center found that youth exposed to tobacco marketing were more likely to use both tobacco and cannabis on the same day. The study used GPS data and surveys to track youth travel patterns and exposure to tobacco outlets.
A study found that long-term cannabis smokers have increased levels of Actinomyces meyeri in their saliva, which correlates with the length of cannabis use. This bacterium was shown to decrease activity and increase beta-amyloid production in mice, suggesting a link between oral microbiome disruption and brain health.
A study of US adults found a link between cannabis use and extremes of nightly sleep duration, with recent users more likely to report short or long sleep. Heavy users were 64% more likely to experience short sleep and 76% more likely to experience long sleep compared to non-users.
A Washington State University study found that cannabis vapor exposure lowered sperm counts and slowed movement in male mice and their sons. The study suggests that cannabis use may be detrimental to male reproductive function, contributing to declining human sperm counts.
Researchers discovered a new family of prenylated volatile sulfur compounds responsible for the characteristic skunky smell of cannabis. The findings suggest these compounds could have medicinal properties and are being investigated further.
A nationwide survey of 387,000 US adults found that high-frequency cannabis use was associated with characteristics such as younger age and lower educational attainment. The study suggests that sociodemographic factors may play a role in cannabis use patterns.
A study found that budtenders and healthcare providers are seeking more training on interacting with pregnant and breastfeeding women about their cannabis use. Healthcare providers have a negative opinion of the effects of cannabis use, while budtenders perceive marijuana as a safer alternative to perinatal alcohol or cigarette use.
Research found that cannabis exposure during pregnancy is associated with higher levels of stress hormone cortisol, anxiety, and hyperactivity in children. Maternal cannabis use also suppresses immune-activating genes, predicting higher anxiety in offspring.
Research conducted by Mount Sinai Hospital reveals that cannabis exposure in utero can lead to higher levels of anxiety, aggression, and hyperactivity in children. Placental gene expression also shows lower immune-activating genes, predicting these outcomes.
A study published in JAMA Network Open found that monthly alcohol sales increased by an average of 5.5% over expected sales, while cannabis sales surged by 25% during the COVID-19 pandemic. Canadians bought $1.86 billion more alcohol and $811 million more cannabis than predicted based on pre-pandemic trends.
Researchers found cannabis use disorders among pregnant patients had sharply higher levels of depression, anxiety, and nausea, warranting clinical concern. The study's findings underscore the need for further exploration of the disorder and its links to psychiatric and medical conditions.
Increased arrest rate disparities in states without cannabis decriminalization and legalization policies highlight the need for targeted interventions to address racial injustice. The study suggests that these policies can help reduce racial disparities in marijuana possession arrests.
US car crash deaths involving cannabis have doubled between 2000 and 2018, with those also involving alcohol increasing by over 100%. Researchers found a significant link between cannabis use and increased risk of alcohol involvement in fatal crashes.
A review and meta-analysis of 17 studies found a significant increase in cannabis vaping among adolescents in the US and Canada. The study reported nearly 200,000 participants, with a doubling of reported vaping prevalence over the eight-year period.
A survey of breast cancer patients found that nearly half use cannabis to alleviate pain, fatigue, and other symptoms while undergoing treatment. Physicians are often unaware of patients' cannabis use, highlighting the need for informed conversations about its potential benefits and risks.
A new study has found that breast milk from marijuana-using mothers does not negatively impact the short-term health of early premature infants. However, researchers note that more research is needed to understand the potential long-term effects of this exposure on these children's development and health.
A new study reveals that THC can cause birth defects in genetically predisposed mice, highlighting the risks of cannabis consumption during pregnancy. Pups with a mutation in Hedgehog signalling developed brain and face defects, emphasizing the need for further research into human health implications.
Scientists at Temple University will explore the therapeutic potential of KLS-13019, a CBD analog that shows promise as an opioid alternative. The Phase 2 SBIR grant aims to test the compound's effects on rat models of neuropathic pain, shedding light on its safety and efficacy.
A new study published in Prehospital and Disaster Medicine found that prehospital ketamine administration for excited delirium with concomitant cocaine intoxication significantly increases the risk of subsequent emergency department intubation. The study's findings suggest that cocaine may deplete excitatory neurotransmitters, leading ...
A recent survey-based study reveals racial and ethnic differences in cannabis use following the legalization of recreational cannabis. The study found that cannabis use increased disproportionately among Black and Hispanic populations compared to White individuals.
A study by Columbia University found that recreational cannabis laws led to increased past-year and past-month cannabis use among Hispanic, Other and non-Hispanic white individuals, but not among non-Hispanic Black people or those aged 12-20. The researchers also highlighted persistent racial disparities in cannabis arrests and incarce...
A Kaiser Permanente analysis of over 100,000 pregnancies in Northern California found a significant increase in cannabis use early in pregnancy after the pandemic began. The rate of cannabis use rose from 6.75% to 8.14% during the pandemic.
A recent study found that nearly a third of women near the menopause transition use cannabis to help manage their symptoms, with 75% using it for medical purposes. The most common reasons for use included sleep issues and anxiety, with three-quarters of current users reporting relief from their symptoms.
A new study by University of Bath psychologists suggests that Spice, a synthetic drug, is more harmful than cannabis and causes more severe withdrawal symptoms. Participants who tried to quit Spice reported experiencing sleep issues, irritability, and low mood, among other symptoms.
A study by the University of Waterloo suggests that reducing brand imagery and increasing health warnings on cannabis packaging can decrease its appeal to children. The researchers found that products with white backgrounds and limited branding were rated as less harmful and more memorable for warning messages.
A survey study found that US state cannabis laws differ significantly, leading to varying dispensary staff recommendations. The study highlights the need for standardized guidelines to ensure patients receive accurate information about cannabis use.
The 2020 Monitoring the Future survey found significant increases in marijuana and hallucinogen use among college students, while daily or near-daily marijuana use rose. In contrast, vaping marijuana and nicotine levels plateaued after sharp increases between 2017 and 2019, while alcohol use declined significantly.
A panel of international experts recommends a trial of non-inhaled medical cannabis or cannabinoids for people with moderate to severe chronic pain, where standard care is insufficient. The recommendation is based on systematic reviews of 32 trials and found small improvements in pain intensity but no benefits in emotional functioning.
A study found that over 50 US localities allow indoor cannabis smoking lounges, exposing customers and employees to secondhand cannabis smoke. Most laws do not require smoke-free environments or effective ventilation, putting public health at risk.
Researchers found that frequent cannabis users were 2 times more likely to have had a heart attack compared to non-users. The study also found an association between recent cannabis use and myocardial infarction across different forms of consumption.