Science Category

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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Marijuana legalization reduces opioid deaths

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

August 5th, 2019
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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
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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…

July 20th, 2019
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More women using cannabis daily before and during pregnancy, research finds

The number of women using cannabis in the year before they get pregnant and early in their pregnancies is increasing, and their frequency of use…

July 18th, 2019
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Legalized recreational marijuana a substitute for alcohol, but not tobacco

The recent wave of recreational cannabis legalization across the US could generate $22 billion in sales per year, but not everyone is happy about it.…

July 17th, 2019
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Marijuana use may not make parents more 'chill'

Sorry, marijuana moms and dads: Using pot may not make you a more relaxed parent, at least when it comes to how you discipline your…

July 16th, 2019
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Cannabis treatment counters addiction: First study of its kind

An Australian study has demonstrated that cannabis-based medication helps tackle dependency on cannabis, one of the most widely used drugs globally. A new article provides…

July 3rd, 2019
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Could marijuana be an effective pain alternative to prescription medications?

A new study has shown how cannabis could be an effective treatment option for both pain relief and insomnia, for those looking to avoid prescription…

June 21st, 2019
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Early-and-regular cannabis use by youth is associated with alteration in brain circuits that support cognitive control

The development of neural circuits in youth, at a particularly important time in their lives, can be heavily influenced by external factors — specifically the…

June 19th, 2019
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Marijuana use increases, shifts away from illegal market

A new article reports that, based on analysis of public wastewater samples in at least one Western Washington population center, cannabis use both increased and…

June 18th, 2019
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Gene linked to cannabis abuse

New research shows that a specific gene is associated with an increased risk of cannabis abuse. The gene is the source of a so-called nicotine…

June 13th, 2019
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Formation of habitual use drives cannabis addiction

A shift from brain systems controlling reward-driven use to habit-driven use differentiates heavy cannabis users who are addicted to the drug from users who aren’t,…

June 12th, 2019
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Medical marijuana does not reduce opioid deaths

Legalizing medical marijuana does not reduce the rate of fatal opioid overdoses, according to researchers.

June 11th, 2019
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Cannabis use among older adults rising rapidly

Cannabis use among older adults is growing faster than any other age group but many report barriers to getting medical marijuana, a lack of communication…

June 11th, 2019
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Genetic analysis of cannabis is here

Research could provide government regulators with powerful new tools for addressing a bevy of commercial claims and other concerns as non-medical marijuana, hemp and CBD…

June 11th, 2019
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Vaping is linked to adolescents' propensity for crime, study shows

A new study explores emerging drug use in the form of adolescent vaping and its association with delinquency among 8th and 10th grade students.

June 11th, 2019
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Synthetic version of CBD treats seizures in rats

A synthetic, non-intoxicating analogue of cannabidiol (CBD) is effective in treating seizures in rats, according to research by chemists. The synthetic CBD alternative is easier…

June 11th, 2019
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Growing up high: Neurobiological consequences of adolescent cannabis use

About one in five Canadian adolescents uses cannabis. Neuroscientists have been researching the effects of cannabis on the adolescent brain. Adolescence is associated with the…

June 11th, 2019
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CBD clinical trial results on seizure frequency in dogs 'encouraging'

Scientists have found in a small study that 89 percent of dogs who received CBD in the clinical trial had a reduction in the frequency…