In case you haven't heard, this guy hashbean420 on youtube can puff the cheeba like no other. Check out this and his other videos if you want to see some seriously impressive smoking.
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Thursday, September 30, 2010
Monday, September 27, 2010
Sunday, September 26, 2010
A Doctor's Opinion on Cannabinoids...
A doctor from the University of Colorado in America has an opinion on cannabis which will doubtless have the hardline anti-cannabis British government choking on their cornflakes.
Until recently only a handful of yoghurt knitting, tree-hugging hippies would have dared utter anything positive about the much maligned and not very well understood cannabis plant.
But over the last decade more and more scientists; people who are trained to understand the complex chemistry behind the human cannabinoid system, are putting the pieces of a huge jigsaw together.
Slowly but surely the big picture gains clarity and whilst there are still a lot of pieces to put into the jigsaw before its finished, what we understand today is that cannabis is, and remains, outlawed for all the wrong reasons.
Dr Robert Melamede Ph.D. is chairman of the Biology Department at UC, (University of Colorado) and he has dedicated his life to learning more on how the human cannabinoid system works.
The Cannabinoid System has been around for over 600 million years.
Before the Dinosaurs.
The Cannabinoid System is continuously evolutioning and has been retained by all new species.
Food and feeding is at the heart of the Cannabinoid System.
1. Cannabinoids are in every living animal on the planet above Hydra and Mollusks, with the exception of insects. Bodies are homeostatically maintained by the Cannabinoid System.
2. Mothers give their babies a booster shot of cannabinoids in mothers milk to give them the munchies because they have to learn to eat. (they've been fed thru the umbilical cord and did not have to know how to eat.)
3. Mice lacking the CB1 receptors don't like any changes. If they are moved to another part of the cage they act upset and when they are put back to the original spot in the cage they relax, but if then put into another part of the cage they get upset again. Comment: I wonder if people, especially drug warriors, had their CB1 receptors blocked then they would resist change and the ones of us that have unblocked CB1 receptors enjoy the benefits of cannabinoids are a lot more relaxed and not paranoid about or over change. Interesting thought. It turns out that that thought is absolutely correct. Many people' brains are not capable of a good connection to the CB1 CB2 receptors.
4. All new species utilize cannabinoids.
5. By being alive and breathing air our bodies produce "free radicals". Cannabinoids help to reverse this action.
6. Cannabinoids do kill brain cells, but the brain cells they kill are called "Glioma" or Cancer of the brain(Tumor). All other brain cells are protected and healed by cannabinoids. (Glioma cells cannot tolerate the action of cannabinoids)
7. Cannabinoids protect against sunburn and skin cancer because of the CB1 receptors in our skin.
8. Cannabinoids slow down the aging process. Mice that their brains respond to cannabinoids live longer and mice that have brains that block the CB1 receptors die younger.
9. Activity in the evolutionary advanced areas of the brain is increased in cannabinoids receptors and promotes higher consciousness levels.
10. Cannabinoids are even found in the white blood cells (CB2 receptors). The CB2 receptors are found predominantly on immunological cells and regulate the shift in the immune system to the anti-inflammatory mode.
11. Cannabinoids protect the heart against Arythmia.
12. The way it works on pain is there is specific nerves that deal with pain. They are called vanilloid-Receptors. Anandamide(sanscript word for "Blissful Amide"), the bodies internally produced marijuana binds with the nerve endings, reducing pain. Anandamides are produced internally by our bodies in response to a whole variety of conditions. As an example, Aspirin prevents the breakdown of Anandamide, the internally produced marijuana to activate & start working at easing pain. How many old lady's say they "WOULD NEVER" use marijuana & are actually using the equivalent of marijuana that their bodies produce as a natural activity, & don't even realize it. And how many politicians and citizens of the US do this also & aren't even aware they are condemning something that their bodies make naturally. Anecdotal evidence is valid because when a person smokes marijuana & it relieves their pain, then they smoke it again & it relieves their pain again it becomes a fact known only to that person, but nonetheless true.
13. In the case of most autoimmune diseases, the bodies immune cells produces free radicals & is destroying it's own body as a foreign object. Cannabis pushes the immune system into anti inflammatory mode & helps slow the progression of that disease, thereby slowing down the aging process.
14. Seizures are controlled by marijuana not only THC, but non-psychoactive cannabidiol.(CBD) The exact mechanism is not known, however HEMP is high in CBD's & can cancel out the psychoactive high of THC & at the same time benefits the user or smoker. Cannabinoids control everything in our bodies including our minds.
15. There are many other things that Cannabinoids do in the body, besides attaching to the CB1 and CB2 receptors, the main cannabinoid receptors in the higher part of our brain. Cannabinoids affect our skin and other parts of our bodies.
16. Pharmaceutical companies are working at sythesizing different cannabinoid components and different types of strains of marijuana. If they can succeed, then there will be more choices for you and I to choose from and we will be able to use what works best for our particular bodies.
17. The natural course for mankind, because of the location of our CB1 CB2 the brains main receptors, is to be more stoned.
18. Drug warriors are not doing what they are doing to us because they are intentionally evil, but because they are more primitive(obtuse comes to mind). They look at the world with fear and hostility not cooperativity and understanding.
19. According to a brain function study of 150 depressed people Cannabis protects the brain against healthy cell death and it also protects Neurons.
20. Cannabinoids dilate our brochial tubes and help asthsma sufferers to breath both in and out. Because of the balance that is maintained in our bodies for good health there are instances where it works backwards, where death is possible, if too much is smoked. This goes back to the effects of cannabinoids on individuals and if it doesn't work for you, you should not use it. There was some old studies that were done back in 1977 where "AEROSOLIZED THC" was used on patients. This is not what the government tells us when they say it's not medicine, but we are all familiar with the 7 government patients that are supplied marijuana to be used as medicine and we know the government is lying.
Due to space constraints we're unable to publish the full text but we really can't recommend highly enough that you click the SOURCE link and read Dr Melamede's text in full. It provides solutions for a lot of unanaswered questions you may have about cannabis.
Dr. Robert J. Melamede Ph.D. Chairman of the Biology Department of the University of Colorado:
Conducting Scientific research on Cannabinoids
and because I grew up on image boards Id like to include an informative semi-related pic for shits and gigs (helps explain the blog):
Until recently only a handful of yoghurt knitting, tree-hugging hippies would have dared utter anything positive about the much maligned and not very well understood cannabis plant.
But over the last decade more and more scientists; people who are trained to understand the complex chemistry behind the human cannabinoid system, are putting the pieces of a huge jigsaw together.
Slowly but surely the big picture gains clarity and whilst there are still a lot of pieces to put into the jigsaw before its finished, what we understand today is that cannabis is, and remains, outlawed for all the wrong reasons.
Dr Robert Melamede Ph.D. is chairman of the Biology Department at UC, (University of Colorado) and he has dedicated his life to learning more on how the human cannabinoid system works.
The Cannabinoid System has been around for over 600 million years.
Before the Dinosaurs.
The Cannabinoid System is continuously evolutioning and has been retained by all new species.
Food and feeding is at the heart of the Cannabinoid System.
1. Cannabinoids are in every living animal on the planet above Hydra and Mollusks, with the exception of insects. Bodies are homeostatically maintained by the Cannabinoid System.
2. Mothers give their babies a booster shot of cannabinoids in mothers milk to give them the munchies because they have to learn to eat. (they've been fed thru the umbilical cord and did not have to know how to eat.)
3. Mice lacking the CB1 receptors don't like any changes. If they are moved to another part of the cage they act upset and when they are put back to the original spot in the cage they relax, but if then put into another part of the cage they get upset again. Comment: I wonder if people, especially drug warriors, had their CB1 receptors blocked then they would resist change and the ones of us that have unblocked CB1 receptors enjoy the benefits of cannabinoids are a lot more relaxed and not paranoid about or over change. Interesting thought. It turns out that that thought is absolutely correct. Many people' brains are not capable of a good connection to the CB1 CB2 receptors.
4. All new species utilize cannabinoids.
5. By being alive and breathing air our bodies produce "free radicals". Cannabinoids help to reverse this action.
6. Cannabinoids do kill brain cells, but the brain cells they kill are called "Glioma" or Cancer of the brain(Tumor). All other brain cells are protected and healed by cannabinoids. (Glioma cells cannot tolerate the action of cannabinoids)
7. Cannabinoids protect against sunburn and skin cancer because of the CB1 receptors in our skin.
8. Cannabinoids slow down the aging process. Mice that their brains respond to cannabinoids live longer and mice that have brains that block the CB1 receptors die younger.
9. Activity in the evolutionary advanced areas of the brain is increased in cannabinoids receptors and promotes higher consciousness levels.
10. Cannabinoids are even found in the white blood cells (CB2 receptors). The CB2 receptors are found predominantly on immunological cells and regulate the shift in the immune system to the anti-inflammatory mode.
11. Cannabinoids protect the heart against Arythmia.
12. The way it works on pain is there is specific nerves that deal with pain. They are called vanilloid-Receptors. Anandamide(sanscript word for "Blissful Amide"), the bodies internally produced marijuana binds with the nerve endings, reducing pain. Anandamides are produced internally by our bodies in response to a whole variety of conditions. As an example, Aspirin prevents the breakdown of Anandamide, the internally produced marijuana to activate & start working at easing pain. How many old lady's say they "WOULD NEVER" use marijuana & are actually using the equivalent of marijuana that their bodies produce as a natural activity, & don't even realize it. And how many politicians and citizens of the US do this also & aren't even aware they are condemning something that their bodies make naturally. Anecdotal evidence is valid because when a person smokes marijuana & it relieves their pain, then they smoke it again & it relieves their pain again it becomes a fact known only to that person, but nonetheless true.
13. In the case of most autoimmune diseases, the bodies immune cells produces free radicals & is destroying it's own body as a foreign object. Cannabis pushes the immune system into anti inflammatory mode & helps slow the progression of that disease, thereby slowing down the aging process.
14. Seizures are controlled by marijuana not only THC, but non-psychoactive cannabidiol.(CBD) The exact mechanism is not known, however HEMP is high in CBD's & can cancel out the psychoactive high of THC & at the same time benefits the user or smoker. Cannabinoids control everything in our bodies including our minds.
15. There are many other things that Cannabinoids do in the body, besides attaching to the CB1 and CB2 receptors, the main cannabinoid receptors in the higher part of our brain. Cannabinoids affect our skin and other parts of our bodies.
16. Pharmaceutical companies are working at sythesizing different cannabinoid components and different types of strains of marijuana. If they can succeed, then there will be more choices for you and I to choose from and we will be able to use what works best for our particular bodies.
17. The natural course for mankind, because of the location of our CB1 CB2 the brains main receptors, is to be more stoned.
18. Drug warriors are not doing what they are doing to us because they are intentionally evil, but because they are more primitive(obtuse comes to mind). They look at the world with fear and hostility not cooperativity and understanding.
19. According to a brain function study of 150 depressed people Cannabis protects the brain against healthy cell death and it also protects Neurons.
20. Cannabinoids dilate our brochial tubes and help asthsma sufferers to breath both in and out. Because of the balance that is maintained in our bodies for good health there are instances where it works backwards, where death is possible, if too much is smoked. This goes back to the effects of cannabinoids on individuals and if it doesn't work for you, you should not use it. There was some old studies that were done back in 1977 where "AEROSOLIZED THC" was used on patients. This is not what the government tells us when they say it's not medicine, but we are all familiar with the 7 government patients that are supplied marijuana to be used as medicine and we know the government is lying.
Due to space constraints we're unable to publish the full text but we really can't recommend highly enough that you click the SOURCE link and read Dr Melamede's text in full. It provides solutions for a lot of unanaswered questions you may have about cannabis.
Dr. Robert J. Melamede Ph.D. Chairman of the Biology Department of the University of Colorado:
Conducting Scientific research on Cannabinoids
and because I grew up on image boards Id like to include an informative semi-related pic for shits and gigs (helps explain the blog):
Friday, September 24, 2010
$3,700 Pipe!
Do you have the stones to rip the Editor Special?
http://www.everyonedoesit.com/online_headshop/Roor_Custom_Little_Sista_Icemaster_70__EDITOT_SPECIAL.cfm?iProductID=5709
http://www.everyonedoesit.com/online_headshop/Roor_Custom_Little_Sista_Icemaster_70__EDITOT_SPECIAL.cfm?iProductID=5709
Cannabis helps teens
Swiss Study Finds Marijuana Use Alone May Benefit Some Teens, U.S. Doctor Disagrees
Monday, November 05, 2007
By Tina Benitez
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Teens that use cannabis may function better than teen tobacco-users, and appear to be more socially driven and have fewer psychosocial problems than those who do not use either substance, according to a Swiss survey.
Researchers at the University of Lausanne in Switzerland surveyed 5,263 students, including 455 who smoke marijuana only, 1,703 who smoke marijuana and tobacco and 3,105 who smoked neither one.
The survey, which will be published in the November issue of Archives of Pediatrics & Adolescent Medicine, found that marijuana-only smokers had better relationships with friends, better grades and were more likely to play sports than teens who smoked tobacco and those who abstained from both substances.
A U.S. substance abuse expert disagreed with the study and said U.S. teens should not be encouraged to use marijuana, particularly since teenagers’ brains are still developing at this time.
“Switzerland is very liberal compared to us in many ways,” Dr. Edwin Salsitz, senior physician of chemical dependency at Beth Israel Medical Center. “In general, it’s not a good idea for teenagers to use psychoactive drugs. The brain is still developing until the age of 21.
“Maybe (there’s) a cultural bias there that says it’s ok to use marijuana once or twice a month,” he continued “But from what I know, I’ve never heard that anyone thought it was beneficial. Most experts here would say that it’s not a good idea to use cannabis before the age of 15, because it interferes with school and the development of brain.”
Researchers found that marijuana-only users had the following characteristics:
— More likely to be male (71.6 percent marijuana smokers versus 59.7 percent of teens who used tobacco and marijuana)
— Play sports (85.5 percent vs. 66.7 percent of tobacco and marijuana)
— Live with both parents (78.2 percent vs. 68.3 percent of tobacco and marijuana)
— Have good grades (77.5 percent vs. 66.6 percent of tobacco and marijuana)
Cannabis-only smokers were also less likely to have been drunk in the past 30 days, less likely to use cannabis before the age of 15 and less likely to use marijuana more than once or twice in the past 30 days. They were also less likely to use other illegal drugs, compared to students who used both substances, researchers found.
“The gateway theory hypothesizes that the use of legal drugs (tobacco and alcohol) is the previous step to cannabis consumption,” the authors wrote. “However, recent research also indicates that cannabis use may precede or be simultaneous to tobacco use and that, in fact, its use may reinforce cigarette smoking or lead to nicotine addiction independently of smoking status. In any case, and even though they do not seem to have great personal, family, or academic problems, the situation of those adolescents who use cannabis but who declare not using tobacco should not be trivialized.”
In comparison to students who abstained from both substances, marijuana-only smokers were:
— More likely to be male (71.6 percent cannabis users vs. 47.7 percent of teens who abstained)
— Have a good relationship with friends (87 percent vs. 83.2 percent)
— Be sensation-seeking (37.8 percent vs. 21.8 percent)
— Play sports (85.5 percent vs. 76.6 percent)
— Less likely to have a good relationship with their parents (74.1 percent vs. 82.4 percent)
The fact that some students who smoked marijuana were less likely to have a good relationship with their parents wasn’t surprising to Salsitz. “The way to look at it is to look at alcohol as an analogy,” he said. “Do adults or teens who use alcohol have better relationships than those abstinent? That’s just not true. It looks like if you smoke marijuana and not tobacco, it’s better for you.”
He said the study should be viewed in terms of culture. “In France, people drink wine with food, but they don’t get drunk,” he said. “Kids also start doing this when they are young, and that’s different from here. I don’t think anyone would say that the active ingredient in marijuana is doing anything good in the brain, compared to abstaining or smoking tobacco, so there must be cultural reason for this happening.”
Monday, November 05, 2007
By Tina Benitez
ShareThis
Teens that use cannabis may function better than teen tobacco-users, and appear to be more socially driven and have fewer psychosocial problems than those who do not use either substance, according to a Swiss survey.
Researchers at the University of Lausanne in Switzerland surveyed 5,263 students, including 455 who smoke marijuana only, 1,703 who smoke marijuana and tobacco and 3,105 who smoked neither one.
The survey, which will be published in the November issue of Archives of Pediatrics & Adolescent Medicine, found that marijuana-only smokers had better relationships with friends, better grades and were more likely to play sports than teens who smoked tobacco and those who abstained from both substances.
A U.S. substance abuse expert disagreed with the study and said U.S. teens should not be encouraged to use marijuana, particularly since teenagers’ brains are still developing at this time.
“Switzerland is very liberal compared to us in many ways,” Dr. Edwin Salsitz, senior physician of chemical dependency at Beth Israel Medical Center. “In general, it’s not a good idea for teenagers to use psychoactive drugs. The brain is still developing until the age of 21.
“Maybe (there’s) a cultural bias there that says it’s ok to use marijuana once or twice a month,” he continued “But from what I know, I’ve never heard that anyone thought it was beneficial. Most experts here would say that it’s not a good idea to use cannabis before the age of 15, because it interferes with school and the development of brain.”
Researchers found that marijuana-only users had the following characteristics:
— More likely to be male (71.6 percent marijuana smokers versus 59.7 percent of teens who used tobacco and marijuana)
— Play sports (85.5 percent vs. 66.7 percent of tobacco and marijuana)
— Live with both parents (78.2 percent vs. 68.3 percent of tobacco and marijuana)
— Have good grades (77.5 percent vs. 66.6 percent of tobacco and marijuana)
Cannabis-only smokers were also less likely to have been drunk in the past 30 days, less likely to use cannabis before the age of 15 and less likely to use marijuana more than once or twice in the past 30 days. They were also less likely to use other illegal drugs, compared to students who used both substances, researchers found.
“The gateway theory hypothesizes that the use of legal drugs (tobacco and alcohol) is the previous step to cannabis consumption,” the authors wrote. “However, recent research also indicates that cannabis use may precede or be simultaneous to tobacco use and that, in fact, its use may reinforce cigarette smoking or lead to nicotine addiction independently of smoking status. In any case, and even though they do not seem to have great personal, family, or academic problems, the situation of those adolescents who use cannabis but who declare not using tobacco should not be trivialized.”
In comparison to students who abstained from both substances, marijuana-only smokers were:
— More likely to be male (71.6 percent cannabis users vs. 47.7 percent of teens who abstained)
— Have a good relationship with friends (87 percent vs. 83.2 percent)
— Be sensation-seeking (37.8 percent vs. 21.8 percent)
— Play sports (85.5 percent vs. 76.6 percent)
— Less likely to have a good relationship with their parents (74.1 percent vs. 82.4 percent)
The fact that some students who smoked marijuana were less likely to have a good relationship with their parents wasn’t surprising to Salsitz. “The way to look at it is to look at alcohol as an analogy,” he said. “Do adults or teens who use alcohol have better relationships than those abstinent? That’s just not true. It looks like if you smoke marijuana and not tobacco, it’s better for you.”
He said the study should be viewed in terms of culture. “In France, people drink wine with food, but they don’t get drunk,” he said. “Kids also start doing this when they are young, and that’s different from here. I don’t think anyone would say that the active ingredient in marijuana is doing anything good in the brain, compared to abstaining or smoking tobacco, so there must be cultural reason for this happening.”
Wednesday, September 22, 2010
Cannabis may promote brain cell growth
Marijuana might cause new cell growth in the brain
22:00 13 October 2005 by Kurt Kleiner
"A synthetic chemical similar to the active ingredient in marijuana makes new cells grow in rat brains. What is more, in rats this cell growth appears to be linked with reducing anxiety and depression. The results suggest that marijuana, or its derivatives, could actually be good for the brain.
In mammals, new nerve cells are constantly being produced in a part of the brain called the hippocampus, which is associated with learning, memory, anxiety and depression. Other recreational drugs, such as alcohol, nicotine and cocaine, have been shown to suppress this new growth. Xia Zhang of the University of Saskatchewan in Saskatoon, Canada, and colleagues decided to see what effects a synthetic cannabinoid called HU210 had on rats' brains.
They found that giving rats high doses of HU210 twice a day for 10 days increased the rate of nerve cell formation, or neurogenesis, in the hippocampus by about 40%."
22:00 13 October 2005 by Kurt Kleiner
"A synthetic chemical similar to the active ingredient in marijuana makes new cells grow in rat brains. What is more, in rats this cell growth appears to be linked with reducing anxiety and depression. The results suggest that marijuana, or its derivatives, could actually be good for the brain.
In mammals, new nerve cells are constantly being produced in a part of the brain called the hippocampus, which is associated with learning, memory, anxiety and depression. Other recreational drugs, such as alcohol, nicotine and cocaine, have been shown to suppress this new growth. Xia Zhang of the University of Saskatchewan in Saskatoon, Canada, and colleagues decided to see what effects a synthetic cannabinoid called HU210 had on rats' brains.
They found that giving rats high doses of HU210 twice a day for 10 days increased the rate of nerve cell formation, or neurogenesis, in the hippocampus by about 40%."
Weed =/= cancer
By Marc Kaufman
Washington Post Staff Writer
Friday, May 26, 2006
"The largest study of its kind has unexpectedly concluded that smoking marijuana, even regularly and heavily, does not lead to lung cancer.
The new findings "were against our expectations," said Donald Tashkin of the University of California at Los Angeles, a pulmonologist who has studied marijuana for 30 years.
"We hypothesized that there would be a positive association between marijuana use and lung cancer, and that the association would be more positive with heavier use," he said. "What we found instead was no association at all, and even a suggestion of some protective effect."
Federal health and drug enforcement officials have widely used Tashkin's previous work on marijuana to make the case that the drug is dangerous. Tashkin said that while he still believes marijuana is potentially harmful, its cancer-causing effects appear to be of less concern than previously thought.
Earlier work established that marijuana does contain cancer-causing chemicals as potentially harmful as those in tobacco, he said. However, marijuana also contains the chemical THC, which he said may kill aging cells and keep them from becoming cancerous.
Tashkin's study, funded by the National Institutes of Health's National Institute on Drug Abuse, involved 1,200 people in Los Angeles who had lung, neck or head cancer and an additional 1,040 people without cancer matched by age, sex and neighborhood.
They were all asked about their lifetime use of marijuana, tobacco and alcohol. The heaviest marijuana smokers had lighted up more than 22,000 times, while moderately heavy usage was defined as smoking 11,000 to 22,000 marijuana cigarettes. Tashkin found that even the very heavy marijuana smokers showed no increased incidence of the three cancers studied.
"This is the largest case-control study ever done, and everyone had to fill out a very extensive questionnaire about marijuana use," he said. "Bias can creep into any research, but we controlled for as many confounding factors as we could, and so I believe these results have real meaning."
Tashkin's group at the David Geffen School of Medicine at UCLA had hypothesized that marijuana would raise the risk of cancer on the basis of earlier small human studies, lab studies of animals, and the fact that marijuana users inhale more deeply and generally hold smoke in their lungs longer than tobacco smokers -- exposing them to the dangerous chemicals for a longer time. In addition, Tashkin said, previous studies found that marijuana tar has 50 percent higher concentrations of chemicals linked to cancer than tobacco cigarette tar.
While no association between marijuana smoking and cancer was found, the study findings, presented to the American Thoracic Society International Conference this week, did find a 20-fold increase in lung cancer among people who smoked two or more packs of cigarettes a day.
The study was limited to people younger than 60 because those older than that were generally not exposed to marijuana in their youth, when it is most often tried."
Washington Post Staff Writer
Friday, May 26, 2006
"The largest study of its kind has unexpectedly concluded that smoking marijuana, even regularly and heavily, does not lead to lung cancer.
The new findings "were against our expectations," said Donald Tashkin of the University of California at Los Angeles, a pulmonologist who has studied marijuana for 30 years.
"We hypothesized that there would be a positive association between marijuana use and lung cancer, and that the association would be more positive with heavier use," he said. "What we found instead was no association at all, and even a suggestion of some protective effect."
Federal health and drug enforcement officials have widely used Tashkin's previous work on marijuana to make the case that the drug is dangerous. Tashkin said that while he still believes marijuana is potentially harmful, its cancer-causing effects appear to be of less concern than previously thought.
Earlier work established that marijuana does contain cancer-causing chemicals as potentially harmful as those in tobacco, he said. However, marijuana also contains the chemical THC, which he said may kill aging cells and keep them from becoming cancerous.
Tashkin's study, funded by the National Institutes of Health's National Institute on Drug Abuse, involved 1,200 people in Los Angeles who had lung, neck or head cancer and an additional 1,040 people without cancer matched by age, sex and neighborhood.
They were all asked about their lifetime use of marijuana, tobacco and alcohol. The heaviest marijuana smokers had lighted up more than 22,000 times, while moderately heavy usage was defined as smoking 11,000 to 22,000 marijuana cigarettes. Tashkin found that even the very heavy marijuana smokers showed no increased incidence of the three cancers studied.
"This is the largest case-control study ever done, and everyone had to fill out a very extensive questionnaire about marijuana use," he said. "Bias can creep into any research, but we controlled for as many confounding factors as we could, and so I believe these results have real meaning."
Tashkin's group at the David Geffen School of Medicine at UCLA had hypothesized that marijuana would raise the risk of cancer on the basis of earlier small human studies, lab studies of animals, and the fact that marijuana users inhale more deeply and generally hold smoke in their lungs longer than tobacco smokers -- exposing them to the dangerous chemicals for a longer time. In addition, Tashkin said, previous studies found that marijuana tar has 50 percent higher concentrations of chemicals linked to cancer than tobacco cigarette tar.
While no association between marijuana smoking and cancer was found, the study findings, presented to the American Thoracic Society International Conference this week, did find a 20-fold increase in lung cancer among people who smoked two or more packs of cigarettes a day.
The study was limited to people younger than 60 because those older than that were generally not exposed to marijuana in their youth, when it is most often tried."
Lets get to it...
"Heavy Marijuana Use Doesn't Damage Brain
Analysis of Studies Finds Little Effect From Long-Term Use
By Sid Kirchheimer
WebMD Health News
July 1, 2003 -- Long-term and even daily marijuana use doesn't appear to cause permanent brain damage, adding to evidence that it can be a safe and effective treatment for a wide range of diseases, say researchers.
The researchers found only a "very small" impairment in memory and learning among long-term marijuana users. Otherwise, scores on thinking tests were similar to those who don't smoke marijuana, according to a new analysis of 15 previous studies.
In those studies, some 700 regular marijuana users were compared with 484 non-users on various aspects of brain function -- including reaction time, language and motor skills, reasoning ability, memory, and the ability to learn new information.
Surprising Finding
"We were somewhat surprised by our finding, especially since there's been a controversy for some years on whether long-term cannabis use causes brain damage," says lead researcher and psychiatrist Igor Grant, MD.
"I suppose we expected to see some differences in people who were heavy users, but in fact the differences were very minimal."
The marijuana users in those 15 studies -- which lasted between three months to more than 13 years -- had smoked marijuana several times a week or month or daily. Still, researchers say impairments were less than what is typically found from using alcohol or other drugs."
Analysis of Studies Finds Little Effect From Long-Term Use
By Sid Kirchheimer
WebMD Health News
July 1, 2003 -- Long-term and even daily marijuana use doesn't appear to cause permanent brain damage, adding to evidence that it can be a safe and effective treatment for a wide range of diseases, say researchers.
The researchers found only a "very small" impairment in memory and learning among long-term marijuana users. Otherwise, scores on thinking tests were similar to those who don't smoke marijuana, according to a new analysis of 15 previous studies.
In those studies, some 700 regular marijuana users were compared with 484 non-users on various aspects of brain function -- including reaction time, language and motor skills, reasoning ability, memory, and the ability to learn new information.
Surprising Finding
"We were somewhat surprised by our finding, especially since there's been a controversy for some years on whether long-term cannabis use causes brain damage," says lead researcher and psychiatrist Igor Grant, MD.
"I suppose we expected to see some differences in people who were heavy users, but in fact the differences were very minimal."
The marijuana users in those 15 studies -- which lasted between three months to more than 13 years -- had smoked marijuana several times a week or month or daily. Still, researchers say impairments were less than what is typically found from using alcohol or other drugs."
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