Does marijuana help with depression and anxiety? This study finds scant evidence to support growing claims

| | November 5, 2019
vpr vermont edition brain marijuana cannabis youth mental health istock feodora chiosea
Image: Vermont Public Radio
This article or excerpt is included in the GLP’s daily curated selection of ideologically diverse news, opinion and analysis of biotechnology innovation.

A major study has found little evidence that cannabis helps with depression, anxiety and other mental health conditions, despite growing claims that the drug is a useful treatment.

Wayne Hall at the University of Queensland, Australia, and his colleagues evaluated all the published and unpublished research between 1980 and 2018 on the use of cannabinoids to treat depression, anxiety, post-traumatic stress disorder and psychosis. They also included studies on the use of cannabinoids to treat symptoms of attention deficit hyperactivity disorder and Tourette syndrome.

Of the 83 studies, which included a total of 3000 participants, only 40 were randomised controlled trials, the gold standard for medical evidence.

Related article:  Disturbing hallucinations and psychosis mysteriously plague some coronavirus patients

They found little evidence that medicinal cannabinoids helped to treat either the overall disorders or their individual symptoms. In one study of 24 people, THC actually made symptoms of psychosis worse.

“The popular media has been remarkably uncritical of the claims made for medical cannabis by the cannabis companies producing and marketing it,” says Hall. But the findings suggest that without high-quality evidence, treating mental disorders with cannabis isn’t justifiable.

Read full, original post: There is little evidence that cannabis helps mental health problems

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
sperm swim

Video: Sperm are ‘spinners not swimmers’—because they are lopsided

Research by fertility scientists in the UK and Mexico challenges the accepted view of how sperm “swim”, suggesting that it ...
mag insects image superjumbo v

Disaster interrupted: Which farming system better preserves insect populations: Organic or conventional?

A three-year run of fragmentary Armageddon-like studies had primed the journalism pumps and settled the media framing about the future ...
dead bee desolate city

Are we facing an ‘Insect Apocalypse’ caused by ‘intensive, industrial’ farming and agricultural chemicals? The media say yes; Science says ‘no’

The media call it the “Insect Apocalypse”. In the past three years, the phrase has become an accepted truth of ...
breastfeeding bed x facebook x

Infographic: We know breastfeeding helps children. Now we know it helps mothers too

When a woman becomes pregnant, her risk of type 2 diabetes increases for the rest of her life, perhaps because ...
biotechnology worker x

Can GMOs rescue threatened plants and crops?

Some scientists and ecologists argue that humans are in the midst of an "extinction crisis" — the sixth wave of ...
food globe x

Are GMOs necessary to feed the world?

Experts estimate that agricultural production needs to roughly double in the coming decades. How can that be achieved? ...
eating gmo corn on the cob x

Are GMOs safe?

In 2015, 15 scientists and activists issued a statement, "No Scientific consensus on GMO safety," in the journal Environmental Sciences ...
Screen Shot at PM

Charles Benbrook: Agricultural economist and consultant for the organic industry and anti-biotechnology advocacy groups

Independent scientists rip Benbrook's co-authored commentary in New England Journal calling for reassessment of dangers of all GMO crops and herbicides ...
Screen Shot at PM

ETC Group: ‘Extreme’ biotechnology critic campaigns against synthetic biology and other forms of ‘extreme genetic engineering’

The ETC Group is an international environmental non-governmental organization (NGO) based in Canada whose stated purpose is to monitor "the impact of emerging technologies and ...
Share via
News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.
Send this to a friend