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.

Using a Portable Raman Spectrometer for Detection of THC

Does Smoking Cannabis Indoors Affect Children's Health?

Does CBD Oil Work for Arthritis Pain?

Cannabis Use and Acute Myocardial Infarctions in Young People

Synthesizing Cannabis from Yeast

Health Effects of Eating Cannabis (Marijuana)

Can Cannabis Use Alter Sperm DNA?

Cannabis and Psychosis

The Potential Advantages of Patient-Directed Cannabis Therapy

Hemp Seed Oil Health Benefits

Latest Cannabis News and Research

Study finds addiction risk tied to reward and impulse genes

Most of the genetic risk for developing a substance use disorder comes from genes that broadly affect how our brains process rewards, regulate impulses and weigh consequences – not from genes that specifically influence substance use disorder or any single drug.

22 Mar 2026

Largest review finds no mental health benefits of medicinal cannabis

A landmark Lancet Psychiatry paper published today – the largest-ever review of the safety and efficacy of cannabinoids across a range of mental health conditions – found no evidence that medicinal cannabis is effective in treating anxiety, depression or post-traumatic stress disorder (PTSD).

16 Mar 2026

Cannabis, cocaine and amphetamines linked to higher stroke risk

Cannabis and other illicit drugs are associated with higher stroke risk, underscoring the importance of addressing substance use disorders in health strategies.

11 Mar 2026

Acute cannabis intoxication appears to broadly disrupt most of the memory systems

Smoking cannabis can do more than blur memories. It can reshape them.

10 Mar 2026

Largest genetic study classifies 14 psychiatric disorders into five major groups

Although mental disorders have multifactorial causes, genetics can explain some of them, yet this field remains largely unexplored in terms of guiding diagnoses and treatments.

9 Mar 2026

Recreational drugs significantly increase the risk of stroke

The recreational drugs cannabis, cocaine and amphetamines significantly increase the risk of stroke – including among younger users – Cambridge researchers have concluded after analyzing data from more than 100 million people.

9 Mar 2026

Could GLP-1 drugs help curb addiction? Large veteran study points to potential benefit

A large cohort study of more than 600,000 US veterans with type 2 diabetes found that initiating GLP-1 receptor agonists was associated with lower risks of developing substance use disorders compared with SGLT-2 inhibitors. Among veterans with existing substance use disorders, GLP-1 receptor agonist use was also linked to fewer overdose events, hospitalizations, and suicide-related outcomes.

8 Mar 2026

GLP-1 drugs may be effective at treating and preventing substance use disorders

Researchers at Washington University School of Medicine in St. Louis show in a new study that GLP-1 medications may be effective at treating and preventing substance use disorders across all major addictive substances studied, suggesting these drugs target a common biological pathway underlying addiction.

4 Mar 2026

Substance use among healthcare workers linked to poorer patient care

Their job is to protect, promote, and restore human health and lives, but healthcare workers believe that their own use of alcohol and illegal drugs reduces the quality of care they provide to patients.

3 Mar 2026

Stronger connection found between cannabis use and mental illness

An analysis of 35,000 Canadians shows that rising cannabis use and worsening mental‑health symptoms are increasingly appearing together, with the connection between the two strengthening over time.

26 Feb 2026

Teen cannabis use trends mirror established alcohol consumption patterns

A new study published in the journal Addiction shows that cannabis use among Swedish adolescents appears to follow the same population-level pattern previously observed for alcohol.

24 Feb 2026

Cannabis use in adolescence associated with higher rates of psychiatric disorders

Adolescents who use cannabis could face a significantly higher risk of developing serious psychiatric disorders by young adulthood, according to a large new study published today in JAMA Health Forum.

20 Feb 2026

Onset of "the munchies" after cannabis use could offer clues to help people with appetite loss

The urgent onset of "the munchies" after cannabis use isn't imaginary – it's a cognitive response that occurs regardless of sex, age, weight or recent food consumption and could offer clues to help people struggling with appetite loss.

19 Feb 2026

Study examines low-risk cannabis use years after legalization

A new study led by Marie-Pierre Sylvestre, professor at the Université de Montréal School of Public Health, examines cannabis use 4 to 5 years after Canadian legalization by adopting a different perspective: rather than focusing solely on at-risk cases or those associated with problems, it identifies the socio-demographic, mental health, and lifestyle profiles of those who present a low risk of cannabis use disorder (CUD).

19 Feb 2026

Study reveals higher rates of substance use among non‑heterosexual groups in the U.S.

A study led by researchers at University of California San Diego School of Medicine reveals higher rates of substance use among all non‑heterosexual groups in the U.S., including people who are uncertain of or who use different terms to describe their sexual identity.

18 Feb 2026

New research initiative examines impact of legal psychedelic services in community settings

A federally funded research initiative will enable researchers at Oregon Health & Science University and other organizations to assess the safety and effectiveness of state-regulated access to psilocybin, also known as magic mushrooms.

12 Feb 2026

Cannabis legalization linked to rising tobacco and cannabis co-use

The legalization of cannabis and the start of retail sales of the drug in the US are linked to both a rise in its recreational use and concurrent use of tobacco, as well as a fall in sole tobacco use, finds an analysis of health behavioral data, published online in the journal Tobacco Control.

9 Feb 2026

Cannabis legalization may lead to a decline in daily opioid use

Legalizing cannabis for both medical and recreational use may lead to a decline in daily opioid use among people who inject drugs in the United States, according to a new study led by a Boston University School of Public Health researcher (BUSPH).

9 Feb 2026

High-quality family dinners reduce teen substance use risk yet severe adversity blunts the benefit

Higher-quality family dinner interactions were associated with lower adolescent alcohol, vaping, and cannabis use in a U.S. survey of parent–adolescent dyads. This protective association was evident mainly among adolescents with low or moderate adverse childhood experiences, but not those with high adversity exposure.

8 Feb 2026