Science Category

June 29th, 2022

Emergency care and hospitalizations higher among cannabis users, study finds

A new study found visits to the emergency department and hospitalizations are 22 per cent higher among individuals who use cannabis compared with those who…

June 7th, 2022

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…

May 20th, 2022

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,…

May 19th, 2022

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…

April 19th, 2022

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.

March 31st, 2022

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.

March 19th, 2022

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…

March 4th, 2022

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…

February 11th, 2022

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…

January 13th, 2022

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…

January 12th, 2022

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…

January 7th, 2022

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…

December 13th, 2021

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…

December 2nd, 2021

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…

October 9th, 2021

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…

October 6th, 2021

‘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…

September 28th, 2021

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…

September 26th, 2021

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…

August 19th, 2021

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…

August 14th, 2021

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.

July 16th, 2021

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…

July 8th, 2021

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…

June 26th, 2021

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…

June 25th, 2021

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…

June 2nd, 2021

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,…

May 13th, 2021

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…

April 15th, 2021

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…

April 12th, 2021

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.

April 8th, 2021

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.

March 22nd, 2021

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…

March 22nd, 2021

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…

March 14th, 2021

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…

February 1st, 2021

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…

January 31st, 2021

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…

January 28th, 2021

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…

January 27th, 2021

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.

January 27th, 2021

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.

January 11th, 2021

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.

January 10th, 2021

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…

December 23rd, 2020

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…