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08-02-2005, 11:37
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#1 (permalink) |
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All gone to pot?
Marijuana affects blood vessels
Marijuana has a long-term effect on blood flow to the brain, potentially increasing the risk of memory damage and stroke, research finds. The National Institute on Drug Abuse in Baltimore found users have faster blood flow in their brains - even after a month of not smoking. The findings suggest marijauna use narrows blood vessels, in way similar to that found in heart disease. Details of the study are published in the journal Neurology. This suggests that marijuana use leads to abnormalities in the small blood vessels in the brain Dr Ronald Herning The researchers tested 54 marijuana users, who smoked between two and 350 joints a week, and 18 non-smokers. They used sophisticated ultrasound technology to measure blood flow in volunteers' brains at the beginning of the study and after a month of abstinence. Marijauna smokers had a faster blood flow, both at the start of the study, and after they had refrained from their habit for four weeks. The smokers also had a higher pulsatility index (PI) score. This is a measure of the resistance to blood flow. The researchers believe the higher PI is caused by narrower blood vessels. Abnormalities Researcher Dr Ronald Herning said: "The marijuana users had PI values that were somewhat higher than those of people with chronic high blood pressure and diabetes. "This suggests that marijuana use leads to abnormalities in the small blood vessels in the brain." The research also found that after a month of not smoking, people who had been moderate users - smoking up to 70 marijuana cigarettes a week - showed signs of improved blood flow. However, a month of abstinence had no positive impact on blood flow among heavy users, who smoked up to 350 joints a week. Dr Herning told the BBC News website that if blood supply to the brain was reduced, then its cells would be starved of oxygen, and unable to function at full capacity. "In the long-term one might see cognitive difficulties, such as problems with memory and thinking," he said. He said it was also possible that using the drug may increase the risk of a stroke, which is caused by damage to the blood vessels in the brain. There are case reports of strokes among young marijauna users. "My advice would be to abstain from using the drug," Dr Herning said. Research by a team at McGill University in Montreal has found that long-term cannabis users lose molecules called CB1 receptors in the brain's arteries. This reduces blood flow to the brain, causing attention deficits, memory loss, and impaired learning ability. Professor Peter Weissberg, medical director of the British Heart Foundation, said: "This paper adds to the growing body of evidence that marijuana has important and persistent physiological effects on blood flow to the brain that may have longterm consequences. "This, coupled with the likelihood that marijuana uses are often also tobacco smokers, points to potential longterm risks for frequent users." Story from BBC NEWS: http://news.bbc.co.uk/go/pr/fr/-/1/h...th/4244489.stm Published: 2005/02/08 11:34:18 GMT © BBC MMV |
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08-02-2005, 12:02
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#4 (permalink) |
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Hmm i hate when people go all "your gonna die" due to some various bad habit. I smoke , but i realise it is bad for me and i limit my use.
People should be posting threads about being a fat fuck is dangerous to your health- heart disease, diabates(spelling), breathing problems, looking ugly etc..... |
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08-02-2005, 12:31
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#6 (permalink) | |
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Quote:
No wonder they're fucked up. But seriously, if something causes a chemically altered state of conciousness by it's use, you'd have to be a complete moron to assume there wouldn't be any lasting effect. |
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08-02-2005, 13:57
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#8 (permalink) |
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Fuck sake, things keep getting worse for all the stoners.. Ive smoked it for years, and to be honest, i know its causing me harm, but everything these days seems to carry a health warning, and either way im gonna die.. might as well get high
Now, where did i put my Rizzla.. Bob |
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08-02-2005, 14:10
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#9 (permalink) |
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I suppose the argument is that everyone's going to die some day anyway, you might aswell be doing something you enjoy.
Life expectancy is twice what it was a few hundred years ago anyway. Not that I'm condoning drug-use. I don't smoke pot, I just don't have a problem with those who do. It's their body, most folk are aware of the detrimental effects pot has on their body, it's their choice to make. |
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