Cannabis

The three main species typically recognized within the Cannabis sativa L. family include Cannabis sativa, Cannabis indica and Cannabis ruderalis. The most well-known compounds found within the cannabis plant are THC, cannabidiol (CBD) and cannabinol (CBN).

CBD Oil: Health Benefits and Risks

There is a growing interest in CBD as a potential drug in the treatment of a wide spectrum of neurologic and neuropsychiatric disorders. However, caution must be taken.

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Cannabis and Psychosis

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The Potential Advantages of Patient-Directed Cannabis Therapy

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Health Effects of Eating Cannabis (Marijuana)

Latest Cannabis News and Research

Adding anxiety to Pennsylvania's medical cannabis program changes patient demographics

Within months of Pennsylvania's medical cannabis program adding anxiety as a qualifying condition, that diagnosis quickly rose to become the most common for cannabis certifications, according to a study by researchers at the University of Pittsburgh and Johns Hopkins University. The study was published today in Annals of Internal Medicine.

8 Jul 2025

Adolescent vaping of THC, CBD and synthetic cannabinoids rises sharply between 2021 and 2023

Novel research has revealed that adolescent vaping of current delta-9-tetrahydrocannabinol (THC), cannabidiol (CBD), and synthetic cannabinoids (SCs) has increased between 2021 and 2023.

2 Jul 2025

Friends and social media drive teen vaping trends

Young people with friends who vape are 15 times more likely to use e-cigarettes, and more adolescents are turning to illicit cannabis products, University of Queensland research has found.

1 Jul 2025

Cannabis smoking changes your DNA, leaving epigenetic scars

Long-term, persistent weekly or more frequent cannabis smoking leaves a distinct and partially reversible epigenetic footprint on blood DNA. These methylation changes strongly overlap with those from tobacco and may serve as biomarkers of smoke exposure.

30 Jun 2025

Social media content exposure linked to teen vaping and cannabis use

Teens who see social media posts showing cannabis or e-cigarettes, including from friends and influencers, are more likely to later start using those substances or to report using them in the past month, according to surveys done by researchers at the Keck School of Medicine of USC.

24 Jun 2025

Cannabidiol may help reduce problematic behaviors in autistic boys

Researchers at the Center for Medicinal Cannabis Research at University of California San Diego School of Medicine have found that cannabidiol (CBD), a non-intoxicating compound found in cannabis, could help reduce problematic behaviors in autistic boys.

23 Jun 2025

OU researchers launch innovative study to track e-cigarette habits in young adults

Electronic cigarettes, or vapes, are widely used and available in hundreds of different types and flavors, yet researchers lack information about the everyday e-cigarette habits of young adults.

18 Jun 2025

Cannabis use associated with increased risk of stroke and heart attacks

Cannabis use is linked to a doubling in the risk of dying from cardiovascular disease, with significantly heightened risks of having a stroke or acute coronary syndrome-sudden reduced or blocked blood flow to the heart-finds a pooled analysis of real world data, published online in the journal Heart.

18 Jun 2025

As cannabis users age, health risks appear to grow

Benjamin Han, a geriatrician and addiction medicine specialist at the University of California-San Diego, tells his students a cautionary tale about a 76-year-old patient who, like many older people, struggled with insomnia.

9 Jun 2025

Teens who smoke or vape are more likely to use cannabis, study finds

German adolescents who use cigarettes or e-cigarettes are at higher risk for cannabis use, underscoring the need for effective school-based prevention programs.

5 Jun 2025

Understanding barriers to treatment for cannabis use disorder in the United States

As cannabis becomes more potent and widely used in the United States – especially among young adults – concerns about cannabis use disorder are growing. More than 16 million Americans meet the criteria, yet most never receive treatment.

3 Jun 2025

Researchers show cannabis dependence drives links to psychiatric disorders

Research uncovers genetic connections between cannabis addiction and psychiatric disorders, urging a reevaluation of cannabis legalization and treatment.

2 Jun 2025

Cannabis use among older adults in the US reaches record levels

Marijuana use among older adults in the US has reached a new high, with 7 percent of adults aged 65 and over who report using it in the past month, according to an analysis led by researchers with the Center for Drug Use and HIV/HCV Research (CDUHR) at the NYU School of Global Public Health.

2 Jun 2025

Cannabis retailers found to be more concentrated in disadvantaged neighborhoods

A novel study reveals a significantly higher concentration of recreational (nonmedical) cannabis retailers in socioeconomically disadvantaged areas and neighborhoods with greater proportions of populations of color across 18 US states in which cannabis use is legal for adults.

2 Jun 2025

Airline pilots face high rates of anxiety and alcohol misuse, study finds

The mental health of airline pilots is at risk, with alarming rates of depression and alcohol misuse, necessitating urgent action for crew and passenger safety.

2 Jun 2025

Salk researchers create detailed genetic atlas of cannabis to date

Cannabis has been a globally important crop for millennia. While best known today as marijuana for its psychoactive cannabinoid THC (tetrahydrocannabinol), historically, cannabis has been a cornerstone of human civilization, providing seed oil, textiles, and food for more than 10,000 years.

29 May 2025

Chronic cannabis use linked to significant cardiovascular risks

A new study led by UC San Francisco researchers finds that chronic cannabis use - whether it's smoked or consumed in edible form - is associated with significant cardiovascular risks.

28 May 2025

Research reveals the impact of cannabis laws on traditional prescriptions

Approval of recreational and medical cannabis laws in most U.S. states has allowed individuals to legally obtain cannabis to treat certain medical ailments that had typically been treated with prescription drugs.

22 May 2025

Uniform vape designs could decrease appeal among young non-smokers

Standardizing the color and branding of disposable vaping devices may deter young people who have never smoked or vaped from trying them in the first place, suggests a comparative study, published online in the journal Tobacco Control.

21 May 2025

Study reveals high rates of cannabis use disorder in older US veterans

A large national study of U.S. veterans aged 65–84 found that 10.3% reported cannabis use in the past 30 days, with over one-third of these meeting criteria for cannabis use disorder. Frequent use and inhaled forms of cannabis sharply increased the risk.

19 May 2025