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.

Cannabis and Health: How Cannabinoids Affect the Human Body

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Cannabis and Psychosis

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Health Effects of Eating Cannabis (Marijuana)

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Hemp Seed Oil Health Benefits

Synthesizing Cannabis from Yeast

Using a Portable Raman Spectrometer for Detection of THC

Does Smoking Cannabis Indoors Affect Children's Health?

Latest Cannabis News and Research

Cannabis use increases mortality risk in alcohol-associated hepatitis patients

People with alcohol-associated hepatitis are more likely to die from the disease if they use cannabis. A large multinational study just published in Alcohol: Clinical and Experimental Research is the first to identify active substance use, particularly cannabis use, by patients as an independent predictor of death in patients with alcohol-associated hepatitis.

9 Nov 2026

Occasional male cannabis users experience stronger effects than women

Men who use cannabis occasionally reacted more strongly to smoked cannabis than women with similar use habits, even though the amount of THC in their blood was about the same, according to a new study from UCLA Health.

6 Nov 2026

Oldest evidence of intoxicating cannabis use found in Siberia

An international research team led by the University of Bern has discovered cannabis seeds and molecular traces of psychoactive cannabis compounds in human hair in a princely tomb in Siberia.

6 Nov 2026

Children exposed to cannabis and tobacco before birth scored lower on thinking tests

In an exploratory analysis of 8,706 U.S. children aged 9 to 11, prenatal exposure to both cannabis and tobacco was associated with modestly lower fluid cognition scores compared with cannabis-only exposure or neither substance. Differences from tobacco-only exposure were not statistically significant, nor were differences in crystallized cognition, and the observational findings could not establish causation.

4 Nov 2026

Cannabis dominates youth hospital visits while alcohol impacts older adults

A large national study analyzing emergency department visits and hospitalizations related to alcohol or cannabis use across the U.S. has found diverging age patterns: Among people who presented to the hospital for a substance-related problem, cannabis was involved in the majority of visits by adolescents and young adults, while alcohol predominated among older adults.

4 Nov 2026

New study links cannabis use to increased cardiovascular risk

Cannabis use, including marijuana, appears to be linked with increased cardiovascular risk, especially for stroke, making it an important consideration for heart disease and stroke prevention and counseling, according to independent, new preliminary research to be presented at the American Heart Association's Scientific Sessions 2026.

2 Nov 2026

New study of 3000 adults connects symbolic immortality to stronger psychological well being

What does it mean to feel that a part of us will live on after we are gone? A new study of nearly 3,000 adults found that people who believed they would be remembered by others tended to report better mental health, a stronger sense of meaning and lower levels of problematic substance use and addictive behaviors. The findings point to a possible link between our sense of lasting significance and the way we cope with stress, uncertainty and mortality.

2 Nov 2026

New database offers insights into psychedelic use outside clinical trials

Fireside Project today announced the publication of "The Fireside Database: Large-Scale Evidence from 25,419 Psychedelic Support Interactions" in Science Advances, providing researchers and policymakers with an unprecedented empirical window into psychedelic use and support outside clinical settings.

30 Oct 2026

Young mothers see rapid increase in substance-related emergency department visits

Emergency department (ED) visits for use of substances, especially opioids, amphetamines, and cannabis, by mothers with dependent children increased almost 5% a year, in contrast to an increase of almost 2% a year among females without children, according to a large study in CMAJ (Canadian Medical Association Journal) https://www.cmaj.ca/lookup/doi/10.1503/cmaj.260078.

26 Oct 2026

Study links recreational cannabis legalization to rising heart attack admissions

Legalization of recreational cannabis in the US is associated with a rise in hospital admissions for cardiovascular disease, finds an analysis of more than 50 million patient discharge records, published in the open access journal BMJ Open.

22 Oct 2026

How microplastics and bacteria interact to drive antibiotic resistance

Microplastics can change how bacteria form biofilms and develop antibiotic resistance. Maria Jazmin Silvero Compagnucci explains.

From Pittcon 22 Oct 2026

Daily vaping in the US rises by 230% from 2013-14

More people are likely vaping, and with greater frequency, in the US since 2013-14, suggests a data analysis published online in the journal Tobacco Control.

20 Oct 2026

Cannabis smokers may need more anesthesia during upper endoscopy

Patients who smoke or vape cannabis may need more anesthesia during an upper endoscopy than those who use edibles or do not use cannabis, according to a new study presented at the ANESTHESIOLOGY® 2026 annual meeting.

19 Oct 2026

Cannabis users face increased heart attack risk around surgery

As marijuana use becomes more common and legal in most U.S. states, patients who use cannabis may face a significantly higher risk of heart attack around the time of surgery, while also showing an unexpected lower risk of dangerous blood clots in the veins, suggests a study presented at the ANESTHESIOLOGY® 2026 annual meeting.

19 Oct 2026

Medical cannabis benefits for insomnia remain uncertain, Cochrane review finds

A new Cochrane review finds that existing evidence is too uncertain to determine whether medical cannabis improves sleep or daytime functioning in people with insomnia.

12 Oct 2026

Long-term cannabis use may disrupt sleep without noticeable symptoms

Millions of Americans use cannabis products as sleep aids, but a new Northwestern Medicine study suggests marijuana may not improve sleep the way many people believe it does.

9 Oct 2026

Cannabis products associated with sustained improvements in patients with inflammatory arthritis

The sustained use of medical cannabis preparations provides safe and effective relief for patients with inflammatory arthritis, according to observational data published in the journal Clinical Medicine Insights: Arthritis and Musculoskeletal Disorders.

6 Oct 2026

Culturally tailored tobacco prevention shows promise for Native youth

Two studies examining commercial tobacco use in Native American communities underscore the importance of culturally responsive prevention and a deeper understanding of how substance use fits into people's everyday lives.

1 Oct 2026

NIH-funded trials will test pregnenolone for addiction and depression

Center for BrainHealth investigator Francesca Filbey, PhD, and UTSW investigator Sherwood Brown, MD, PhD, have secured two awards from the National Institutes of Health (NIH) to fund two major collaborative studies investigating whether the naturally occurring neurosteroid pregnenolone can help treat substance use disorders and co-occurring depression.

1 Oct 2026

Study finds rising cannabis use disorder among older adults

Cannabis use is becoming increasingly common among older adults in the United States, but less is known about how often cannabis use may become problematic in this population.

28 Sep 2026