Science Category

Cannabis products demonstrate short-term reduction in chronic pain, little else, review finds

Evidence behind the effectiveness of cannabis-related products to treat chronic pain is surprisingly thin, according to a new systematic evidence review. Voters in a number…

Major uptick reported in cannabis vaping for all adolescents

Cannabis vaping is increasing as the most popular method of cannabis delivery among all adolescents in the U.S., as is the frequency of cannabis vaping,…

Four-year college students drink more, use marijuana less than community college peers, study finds

Students at four-year colleges and universities drink nearly twice as much alcohol as their peers in two-year colleges, according to a survey of college students…

Fruit snack or edible? Study finds some cannabis products look like popular snacks

Some cannabis edibles look remarkably like popular snack foods and may be easily confused for them, finds a new study.

Babies exposed to cannabis in the womb may be at risk for obesity, high blood sugar

Cannabis use among pregnant women is on the rise and may be associated with negative health outcomes in children, according to a new study.

Marijuana for medical use may result in rapid onset of cannabis use disorder

A new study shows that using cannabis products to treat pain, anxiety and depression failed to improve these symptoms while doubling the risk of developing…

Brain stimulation shows promise as treatment for cannabis use disorder in people with schizophrenia

Repetitive transcranial magnetic stimulation (rTMS) was associated with a reduction in self-reported cannabis use by up to 60 per cent among people with schizophrenia who…

How does cannabis use affect brain health? Caution advised, more research needed, experts say

Although recreational and medicinal marijuana (cannabis) is increasingly available across the U.S., public and professional awareness that cannabis use may adversely affect brain health is…

Cannabis poisoning in young children increased nine times after legalization

Ontario saw nine times more emergency department visits per month for cannabis poisonings in young children under the age of 10 after Canada legalized recreational…

Brain-based method to determine impairment from cannabis intoxication

A new study shows that imaging of brain activity with functional near-infrared spectroscopy might offer a more accurate and reliable way to distinguish impairment from…

Marijuana users’ risk of deadly complication doubles after rare type of bleeding stroke

Among adults with a certain type of bleeding stroke, those who used marijuana within the last 3-30 days were more than twice as likely to…

Cannabis use could cause harmful drug interactions

Using cannabis alongside other drugs may come with a significant risk of harmful drug-drug interactions, new research suggests. The researchers looked at cannabinoids–a group of…

Why cannabis smells skunky

As cannabis is legalized in more areas, it has become increasingly popular as a medicinal and recreational drug. This plant produces a pungent, skunk-like odor…

Breast milk of marijuana users does not hurt short-term health of early premature infants, long-term effects still unknown

Researchers compared early preterm infants who were fed breast milk from THC-positive mothers to those who were fed either formula or breast milk from THC-negative…

‘The mother of all cannabinoids’: Anti-seizure compounds discovered in cannabis

Scientists have found that three rare cannabinoids reduce seizures in mice. They using the information to develop a better cannabis-based treatment for Dravet syndrome, an…

Passage of recreational cannabis laws leads to some rise in use but not for all demographics

The U.S. is seeing an increased use of cannabis resulting from its legalization for recreational purposes. The findings showed that passage of the laws led…

Smartphone sensor data has potential to detect cannabis intoxication

A smartphone sensor, much like what is used in GPS systems, might be a way to determine whether or not someone is intoxicated after consuming…

Teens who use cannabis frequently more likely to have premature baby

Teenagers who use cannabis frequently may be more likely to have children born preterm, when they become parents up to twenty years later, finds a…

Cancer patients use less marijuana than general public, study finds

A new study shows that between 2013 and 2018, as many U.S. states were legalizing recreational marijuana, cancer patients continued to abstain in large numbers.

Study shows strong association between perceived risk, availability and past-year cannabis use

Combined perceptions of the risk and availability of cannabis influence the risk of cannabis use more than perceived risk and perceived availability alone, according to…

Novel study of high-potency cannabis shows some memory effects

Researchers observed participants over Zoom as they used high-potency cannabis they purchased themselves from dispensaries in Washington state, where recreational cannabis is legal. After administering…

People with fibromyalgia are substituting CBD for opioids to manage pain

As the ravages of the opioid epidemic lead many to avoid these powerful painkillers, a significant number of people with fibromyalgia are finding an effective…

Adolescent marijuana, alcohol use held steady during COVID-19 pandemic

Adolescent marijuana use and binge drinking did not significantly change during the COVID-19 pandemic, despite record decreases in the substances’ perceived availability, according to a…

Early exposure to cannabis compounds reduces later neural activity in zebrafish

Zebrafish exposed to the leading cannabinoids found in cannabis in the earliest stages of development suffer a significant drop in neural activity later in life,…

Peptide could allow medical marijuana to relieve pain without side effects

Many people live with chronic pain, and in some cases, cannabis can provide relief. But the drug also can significantly impact memory and other cognitive…

Genetic predisposition to schizophrenia may increase risk of psychosis from cannabis use

New research shows that while cannabis users had higher rates of psychotic experiences than non-users across the board, the difference was especially pronounced among those…

Early cannabis use linked to heart disease

Smoking cannabis when you’re young may increase your risk of developing heart disease later, according to a recent study.

Cannabis legalization and link to increase in fatal collisions

Legalization of recreational cannabis may be associated with an increase in fatal motor vehicle collisions based on data from the United States.

Heritable traits that appear in teen years raise risk for adult cannabis use

Study finds that a small portion of the risk for repeated cannabis use into adulthood can be attributed to the genetic effects of neuroticism, risk…

Medical cannabis can reduce essential tremor: Turns on overlooked cells in central nervous system

Medical cannabis can reduce essential tremor in mice. By injecting a specific synthetic cannabinoid into the spinal cord of mice suffering from essential tremor, researchers…

Sharp reductions in costs of producing cannabis, fentanyl likely to spur widespread changes in use, dependence

A new analysis explores the effects of these changes on use. The analysis concludes that sharp declines in production costs for cannabis and opioids could…

Frequent cannabis use by young people linked to decline in IQ

A study has found that adolescents who frequently use cannabis may experience a decline in Intelligence Quotient (IQ) over time. The findings of the research…

Legal cannabis stores linked to fewer opioid deaths in the United States

Access to legal cannabis stores is associated with a reduction in opioid related deaths in the United States, particularly those linked to synthetic opioids such…

The dangers of drugged driving are outpacing drunk driving

A recent study of drugged driving shows that a sizable percentage of individuals reported the use of marijuana and other illicit drugs while operating behind…

Cannabis use both helps and hurts entrepreneurial creativity

When entrepreneurs dream up ideas for new businesses, cannabis use might help, and hinder, their creativity, according to a new study.

Drink and drug risk is lower among optimistic pupils with 'happy' memories

Teenagers with happy childhood memories are likely to drink less, take fewer drugs and enjoy learning, according to new research.

Marijuana use typically drops at the beginning of the year, then climbs in summer and fall

Marijuana use increases throughout the calendar year, with use up 13 percent on average at the end of each year compared to the beginning.

More than half of people using cannabis for pain experience multiple withdrawal symptoms

More than half of people who use medical marijuana products to ease pain also experience clusters of multiple withdrawal symptoms when they’re between uses, a…

Cannabis use blunts stress reactivity in female rats

Female rats that inhaled vaporized cannabis daily for a month developed a blunted physiological response to stress, according to a new study. In contrast, male…

Experimental vaccine can counter dangerous effects of synthetic cannabinoids

Made in clandestine laboratories and sold widely across the United States, the diverse class of drugs known as synthetic cannabinoids presents a growing public health…