Science Category
Cannabis ads and store location influence youth marijuana use
States may want to consider the proximity of cannabis retailers and cannabis advertising to neighborhoods to prevent underage use of the drug, according to new…
It is time to embrace cannabis for medicinal use, say experts
Attitudes towards cannabis products for medicinal use need to change with much greater appropriate use of such products to help alleviate patients’ pain, suggests new…
Study of siblings finds moderate cannabis use impacts cognitive functioning
A new study compares adolescent siblings to determine the impact of early and frequent use of marijuana on cognitive function. This study contrasts with previous…
Pain tolerance among cannabis users
A recent study examining pain among cannabis users suggests that — unlike long-term opioid use — regular cannabis use does not appear to increase pain…
Rates of e-cigarette and marijuana use not associated with vaping-related lung injuries, study finds
Higher rates of e-cigarette and marijuana use in U.S. states did not result in more e-cigarette or vaping-related lung injuries (known as EVALI), a new…
Cannabinoids may affect activity of other pharmaceuticals
Cannabinoid-containing products may alter the effects of some prescription drugs, according to researchers. They published information that could help medical professionals make safe prescribing choices…
Legal marijuana may be slowing reductions in teen marijuana use
A longitudinal study of more than 230 teens and young adults in Washington state finds that teens may be more likely to use marijuana following…
Marijuana use while pregnant boosts risk of children's sleep problems
As many as 7% of moms-to-be use marijuana while pregnant, and that number is rising fast as more use it to quell morning sickness. But…
Marijuana concentrates spike THC levels but don't boost impairment
A study of 121 regular users of legal market cannabis found that higher potency does not necessarily mean greater intoxication. It also found that while…
Cannabis temporarily relieves PTSD symptoms, study suggests
People suffering from post-traumatic distress disorder report that cannabis reduces the severity of their symptoms by more than half, at least in the short term,…
Users of high-potency cannabis four times more likely to report associated problems
Users of high-potency cannabis are four times more likely to report associated problems, and twice as likely to report anxiety disorder, than users of lower-potency…
Legal cannabis hemp oil effectively treats chronic neuropathic pain
Researchers examine the effectiveness of consuming hemp oil extracted from the whole cannabis plant using a chronic neuropathic pain animal model. Researchers showed that legal…
Minimum legal age for cannabis use should be 19, study suggests
The optimal minimum legal age for non-medical cannabis use is 19 years of age, according to a new study.
Researchers develop chemistry needed to create marijuana breathalyzer
Chemists report the key chemical discovery necessary for the creation of a small, electronic marijuana breathalyzer.
How much does it cost California cannabis growers to safety test?
The high cost of testing cannabis in California leads to higher prices for the consumer, which could drive consumers to unlicensed markets. A new study…
Frequent cannabis users are way too high … in their estimates of cannabinoids
Researchers surveyed nearly 500 Hash Bash attendees, asking them to fill out a 24-item questionnaire. Participants were asked to fill in, in milligrams, the amounts…
Whether marijuana helps with pain is unclear
Medical marijuana users who say they have high levels of pain are more likely than those with low pain to say they use cannabis three…
Saliva test for cannabis could someday help identify impaired drivers
Those who consume alcohol and drive are often subjected to roadside stops, breathalyzer tests and stiff penalties if their blood alcohol content exceeds certain limits.…
Marijuana may impair female fertility
Female eggs exposed to THC, the psychoactive ingredient in marijuana, have an impaired ability to produce viable embryos, and are significantly less likely to result…
New research sheds light on potentially negative effects of cannabis
Coughing fits, anxiety and paranoia are three of the most common adverse reactions to cannabis, according to a recent study.
Legal marijuana products too strong for pain relief
More than 90% of the legal marijuana products offered in medical dispensaries are much stronger than what clinical studies have shown that doctors recommend for…
Artisanal CBD not as effective as pharmaceutical CBD for reducing seizures
Children and teens with epilepsy who were treated with pharmaceutical cannabidiol (CBD) had much better seizure control than those who were treated with artisanal CBD,…
Preclinical study links human gene variant to THC reward in adolescent females
A common variation in a human gene that affects the brain’s reward processing circuit increases vulnerability to the rewarding effects of the main psychoactive ingredient…
Study paints picture of marijuana use in pregnant women
As marijuana is increasingly being legalized in US states, daily marijuana use among pregnant women is rising, despite evidence that this could harm their babies.…
Few consumers understand THC levels in cannabis edibles
Few cannabis consumers understand what the THC numbers on packages of cannabis edibles really mean, according to a new study. The study, which surveyed nearly…
Medicinal cannabis may not ease sleep problems in the long run
Medicinal cannabis might not ease sleep problems in people with chronic pain over the long term, because frequent users might build up tolerance to its…
Focus on opioids and cannabis in chronic pain media coverage
New Zealand media reports on chronic pain are focusing on treatments involving opioids and cannabis at the expense of best practice non-drug treatments, researchers have…
Real risks associated with cannabis exposure during pregnancy
A new study has definitively shown that regular exposure to THC, the main psychoactive ingredient in cannabis, during pregnancy has significant impact on placental and…
Study sheds light on link between cannabis, anxiety and stress
A molecule produced by the brain that activates the same receptors as marijuana is protective against stress by reducing anxiety-causing connections between two brain regions,…
College students use more marijuana in states where it's legal, but they binge drink less
Marijuana use among college students has been trending upward for years, but in states that have legalized recreational marijuana, use has jumped even higher. A…
Impaired driving — even once the high wears off
Researchers have discovered that recreational marijuana use affects driving ability even when users are not intoxicated. Cannabis users had more accidents, drove at higher speeds,…
Marijuana detected in homicide victims nearly doubles
Researchers assessed the time trends in alcohol and marijuana detected in homicide victims and found that the prevalence of marijuana almost doubled, increasing from 22…
Scientists discover medicinal cannabis substitute for treating Parkinson's disease
A drug that provides the benefits obtained from medicinal cannabis without the ‘high’ or other side effects may help to unlock a new treatment for…
Study reveals increased cannabis use in individuals with depression
New findings reveal the prevalence of cannabis, or marijuana, use in the United States increased from 2005 to 2017 among persons with and without depression…
Medical marijuana cards often sought by existing heavy users
Young adults who seek enrollment in state medical marijuana programs are often those who already use heavily rather than those with mental or physical issues…
Increase in calls to US poison control for natural psychoactive substances
A new study found there were more than 67,300 calls to US Poison Control Centers regarding exposures to natural psychoactive substances. The study looked at…
Cannabis reduces headache and migraine pain by nearly half
Inhaled cannabis reduces self-reported headache severity by 47.3% and migraine severity by 49.6%, according to a recent study. The study also found no evidence that…
Daily cannabis use lowers odds of using illicit opioids among people who have chronic pain
For those using illicit opioids to manage their chronic pain, cannabis may be a beneficial — and a less dangerous — alternative, according to new…
In states where recreational marijuana is legal, problematic use increased among adults and teens
Problematic use of marijuana among adolescents and adults increased after legalization of recreational marijuana use, according to a new study from NYU Grossman School of…
Some CBD products may yield cannabis-positive urine drug tests
A small study concludes that caution is warranted for users of ‘high CBD, low THC’ cannabis products.