Marijuana/Cannabis News and Research

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Marijuana is a green, brown, or gray mixture of dried, shredded leaves, stems, seeds, and flowers of the hemp plant (Cannabis sativa). Cannabis is a term that refers to marijuana and other drugs made from the same plant. Other forms of cannabis include sinsemilla, hashish, and hash oil. All forms of cannabis are mind-altering (psychoactive) drugs.

Cannabis-based medicines given in a highly-controlled clinical environment unexpectedly lead to strong psychotic effects

Volunteers taking cannabis-based therapeutic drugs as part of a controlled trial, which had been approved by an ethics board as safe for the subjects, experienced psychotic effects just as strong as if they had smoked cannabis. These findings, highly unexpected in such a controlled environment, are published today in the peer-reviewed, Open Access journal BMC Psychiatry.

3 Apr 2005

Sixteen per cent of people who use cannabis for medical reasons say that their doctor suggested it

"The results of our UK survey, including the extent of use and reported effects, lend support to the further development of safe and effective medicines based on cannabis" says lead author Dr Mark Ware principal investigator and pain physician at the McGill University Health Centre (MUHC) Pain Centre.

21 Mar 2005

What risk factors influence teenagers to start experimenting with marijuana?

Involvement with other substances (alcohol and cigarettes), delinquency and school problems have been established as the three most important risk factors in identifying teenagers at risk of continued involvement with marijuana by a Cardiff University scientist, in collaboration with a colleague in the USA.

16 Mar 2005

Doubts over cannabis being a therapeutic and harmless drug

New research from the Christchurch School of Medicine and Health Sciences, Otago University, raises more doubts over cannabis being a therapeutic and harmless drug.

28 Feb 2005

Research shows preventive effects of cannabinoids on Alzheimer's disease

New research shows that a synthetic analogue of the active component of marijuana may reduce the inflammation and prevent the mental decline associated with Alzheimer's disease.

22 Feb 2005

Cannabis use may increase risk of stroke

Regular users of cannabis could be putting themselves at risk of stroke, while they are still young, indicates a case report, published in the Journal of Neurology Neurosurgery and Psychiatry.

20 Feb 2005

Marijuana changes blood flow in the brain

People who smoked marijuana had changes in the blood flow in their brains even after a month of not smoking, according to a study published in the February 8 issue of Neurology, the scientific journal of the American Academy of Neurology.

7 Feb 2005

Smoking marijuana is associated with increased risk of many of the same symptoms as smoking cigarettes

Smoking marijuana is associated with increased risk of many of the same symptoms as smoking cigarettes--chronic bronchitis, coughing on most days, phlegm production, shortness of breath, and wheezing, according to a Yale study published in the Journal of General Internal Medicine.

13 Jan 2005

Seven percent of college students have used prescription stimulants for non-medical purposes

Seven percent of college students have used prescription stimulants for non-medical purposes over their lifetimes and 4 percent have used in the past year, according to a study of students at 119 four-year colleges and universities nationwide published in the January issue of the journal Addiction.

10 Jan 2005

Elementary school intervention boosts positive functioning in early childhood

An elementary school intervention program that taught children impulse control and gave their teachers and parents better management skills has long-lasting effects extending into early adulthood, showing that the children are more productive and well-adjusted members of society at age 21, according to a new study.

4 Jan 2005

Teen concerns about inhalants and painkiller use

According to the Department of Health and Human Services, results from the annual Monitoring the Future (MTF) survey indicate an almost 7 percent decline of any illicit drug use in the past month by 8th, 10th, and 12th graders combined from 2003 to 2004.

21 Dec 2004

Study shows that obesity is up, as is drinking by women

With the time for New Year’s resolutions uncomfortably close, latest data from a huge nationwide study shows that obesity is up, as is drinking by women. We are also getting more depressed and anxious and taking more drugs, and the poorer we are, the more likely it is we will smoke and not exercise or eat healthily.

21 Dec 2004

Study of safety issues surrounding the medical use of cannabis has just been launched

A first-of-its-kind study of safety issues surrounding the medical use of cannabis has just been launched. Known as the COMPASS study (Cannabis for the management of pain: assessment of safety study), the research initiative will follow 1400 chronic pain patients, 350 of whom use cannabis as part of their pain management strategy, for a one-year period.

8 Dec 2004

Frequent cannabis use increases the risk of psychotic symptoms

Frequent cannabis use during adolescence and young adulthood increases the risk of psychotic symptoms later in life, according to a new study published on bmj.com.

1 Dec 2004

Body's 'internal marijuana': A new target for treatment of schizophrenia, Parkinson's?

“Endocannabinoids” is an impressive word that sounds like the name for a group of tribal warriors or an ancient people. Actually, it is the scientific term for beneficial molecules produced in the brain that act as “a sort of internal marijuana in our system

4 Nov 2004

Need to belong influences adolescent workplace drug use

In the high-pressure atmosphere of the building and construction industry, adolescent workers are highly susceptible to indulging in work related drug and alcohol use.

4 Nov 2004

Marijuana-like compounds may aid Parkinson's disease, pain and obesity

No longer a pipe dream, new animal research now indicates that marijuana-like compounds can aid a bevy of debilitating conditions, ranging from brain disorders such as amyotrophic lateral sclerosis (ALS) and Parkinson's disease, to pain and obesity.

28 Oct 2004

Possible link between elevated calcium levels in older neurons and aging-related disorders of the brain

Brain cells become increasingly unable to regulate calcium loads as they age, becoming more vulnerable to injury and premature death, according to new findings that Virginia Commonwealth University researchers will present at an international conference this month.

20 Oct 2004

Ecstasy does affect the memory of people who take it

The 'party drug' Ecstasy does affect the memory of people who take it, especially in high-pressure situations, according to a new study by an ANU Clinical Psychology PhD student.

7 Oct 2004

Canadian agency releases report on the health of Canada's young people

Today the Public Health Agency of Canada released Young People in Canada: Their Health and Well-Being, which highlights the importance of young people being well-integrated socially and having supportive relationships and environments at home and at school.

5 Oct 2004