Science Category

March 1st, 2020

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,…

February 15th, 2020

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…

February 10th, 2020

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.…

February 7th, 2020

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…

January 25th, 2020

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…

January 17th, 2020

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…

January 17th, 2020

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…

January 16th, 2020

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,…

January 15th, 2020

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…

January 15th, 2020

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,…

January 9th, 2020

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…

December 21st, 2019

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…

December 10th, 2019

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…

December 6th, 2019

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…

December 1st, 2019

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…

November 25th, 2019

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…

November 20th, 2019

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…

November 14th, 2019

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…

November 5th, 2019

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.

November 1st, 2019

Cannabis use disorder is declining among young adolescents and young adults

The prevalence of cannabis use disorder decreased in 2002 to 2016 among frequent users. Changes in social attitudes and the traits of frequent users may…

October 30th, 2019

Of all professions, construction workers most likely to use opioids and cocaine

Construction workers are more likely to use drugs than workers in other professions, finds a new study.

October 29th, 2019

Teen marijuana use may have next-generation effects

A new study shows how a parent’s use of marijuana, past or present, can influence their child’s substance use and well-being.

October 28th, 2019

The frostier the flower, the more potent the cannabis

Cannabis flowers with the most mushroom-shaped hairs pack the biggest cannabinoid and fragrance punch, according to new research.

October 15th, 2019

Potential therapy to treat detrimental effects of marijuana

A new study using a preclinical animal model suggests that prenatal exposure to THC, the psychoactive component of cannabis, makes the brain’s dopamine neurons (an…

October 1st, 2019

Cannabis study reveals how CBD offsets the psychiatric side-effects of THC

Researchers have shown for the first time the molecular mechanisms at work that cause cannabidiol, or CBD, to block the psychiatric side-effects caused by tetrahydrocannabinol…

September 24th, 2019

Older adults with COPD more likely to use synthetic cannabinoids

Chronic obstructive pulmonary disease (COPD) is a progressive lung disease that’s often associated with a variety of health problems, including chronic muscle pain and insomnia.…

September 4th, 2019
0

Medical marijuana laws impact use among sexual minorities differently than heterosexuals

Bisexual women had higher rates of past-year and daily marijuana use compared to heterosexual women, and gay/lesbian women were also more likely to report daily…

September 4th, 2019
0

Cannabis may hold promise to treat PTSD but evidence lags behind use

As growing numbers of people are using cannabis to treat post-traumatic stress disorder (PTSD), a new study reports that prescriptions are not backed up by…

August 27th, 2019
0

New breathalyzer can detect marijuana

A team has developed a breathalyzer device that can measure the amount of tetrahydrocannabinol (THC), the psychoactive compound in marijuana, in the user’s breath. The…

August 27th, 2019
0

Gene linked to autism undergoes changes in men's sperm after pot use

A specific gene associated with autism appears to undergo changes in the sperm of men who use marijuana, according to new research. The gene change…

August 27th, 2019
0

Teens are using a highly potent form of marijuana

Nearly one in four Arizona teens have used a highly potent form of marijuana known as marijuana concentrate, according to a new study. Among nearly…

August 21st, 2019
0

Cannabis flower is an effective mid-level analgesic medication for pain

Using the largest database of real-time recordings of the effects of common and commercially available cannabis products in the United States, researchers found strong evidence…

August 20th, 2019
0

Spending on illicit drugs in US nears $150 billion annually

Spending on cannabis, cocaine, heroin and methamphetamine fluctuated between $120 billion and $145 billion each year from 2006 to 2016, rivaling what Americans spend each…

August 16th, 2019
0

Cannabis-related poison control calls for Massachusetts kids doubled after medical pot legalized

After medical marijuana became legal in Massachusetts, cannabis-related poison control calls involving the commonwealth’s children and teenagers doubled, according to a public health investigation.

August 13th, 2019
0

Marijuana may boost risky effects of drinking alcohol

Compared to people who only drank alcohol, those who used alcohol and marijuana simultaneously were more likely to drink heavier and more often, according to…

August 12th, 2019
0

Adults who mix cannabis with opioids for pain report higher anxiety, depression

Not a good mix: A researcher has found that adults who combine prescription opioids for severe pain and cannabis report elevated anxiety and depression symptoms,…

August 7th, 2019
0

Cannabis' effects on brain neurochemistry

A new study provides the first evidence of a blunted response to stress-induced dopamine signaling in the brain’s prefrontal cortex in individuals at high risk…

August 7th, 2019
0

Marijuana legalization reduces opioid deaths

A new study finds that marijuana access leads to reductions in opioid-related deaths.

August 5th, 2019
0

Patterns of substance use and co-use by adolescents

Using in-depth interviews with adolescents (16-19 years of age) who used alcohol and marijuana, this study examines the role that social and physical contexts play…

July 31st, 2019
0

Antioxidant compound from soybeans may prevent marijuana-induced blood vessel damage

Marijuana exposure damages cells of the inner lining of blood vessels throughout the heart and vascular system. In studies with human cells and arteries from…