Europe South Asia Asia Pacific Americas Middle East Africa BBC Homepage World Service Education



Front Page

World

UK

UK Politics

Business

Sci/Tech

Health

Education

Sport

Entertainment

Talking Point
On Air
Feedback
Low Graphics
Help

Saturday, July 4, 1998 Published at 11:34 GMT 12:34 UK


Sci/Tech

Dope hope for stroke victims

Scientists not recommending smoking cannabis

Extracts from cannabis could help reduce brain damage in stroke victims, according to new research.

American scientists say they have found that several of the chemicals in cannabis or marijuana help to prevent damage to brain tissue.

But the scientists at the US National Institute of Mental Health in Bethesda, Maryland, are not recomending smoking dope after a stroke.

The report is likely to lead to increased pressure to make marijuana and its derivatives more widely available for use on prescription.

Preventing cell damage


[ image: Cannabis: could help stroke victims]
Cannabis: could help stroke victims
A stroke happens when a blood clot blocks one of the branches of the artery supplying the brain with blood and oxygen. If brain cells are deprived of oxygen for more than a few minutes they die.

But recent research has shown that most of the damage to the brain after a stroke is caused not directly by lack of oxygen but by the release of destructive oxidising agents which break down cells as if they were being burnt.

The Maryland team have shown that this type of damage can be largely prevented by chemicals known as cannabinoids which are found in marijuana.

Dr Aidan Hampson of the NIMH said: "We have found that cannaboids are very powerful anti-oxidants. In fact they appear to be more powerful than vitamin C or vitamin E."

What is not clear is whether smoking marijuana will release enough of the cannaboids to do any good.

Instead scientists hope to use synthetic cannabinoids to reduce brain damage after strokes, and possibly to slow up the progress of Alzheimers disease and Parkinsons disease as well.

It is likely that patients would take the drug using an inhaler of the type used by asthma sufferers.





Advanced options | Search tips




Back to top | BBC News Home | BBC Homepage | ©


Sci/Tech Contents

Relevant Stories

11 Jun 98 | Health
Top secret pot farm

19 May 98 | Drugs
Legalising cannabis - a potted history





Internet Links

National Institute of Mental Health

UK Cannabis Information


The BBC is not responsible for the content of external internet sites.




In this section

World's smallest transistor

Scientists join forces to study Arctic ozone

Mathematicians crack big puzzle

From Business
The growing threat of internet fraud

Who watches the pilots?

From Health
Cold 'cure' comes one step closer