Jefridas rašė:Marijuana is an immunosuppressant whose degenerative influence extends beyond the respiratory system. Regular smoking affects the overall ability of the smoker's body to defend itself against infection by weakening various natural immune mechanisms, including macrophages and T-cells, which impairs the ability to fight off infections. Harvard University researchers report that the risk of a heart attack is five times higher than usual in the hour after smoking marijuana. A Columbia University study found that a control group smoking a single marijuana cigarette every other day for a year had a white-blood-cell count that was 39 percent lower than normal, thus damaging the immune system and making the user far more susceptible to infection and sickness.
Marihuana yra imunosupresantas o imunosupresantas yra imuniteto veiksmingumą mažinantis veiksnys.
Sigma, ne taip parašiau, ale susimaišiau.
Nu pastebėjimą tą įmest.
"CLAIM #5:
MARIJUANA IMPAIRS IMMUNE SYSTEM FUNCTIONING
It has been widely claimed that marijuana substantially increases users' risk of contracting various infectious diseases. First emerging in the 1970s, this claim took on new significance in the 1980s, following reports of marijuana use by people suffering from AIDS.
THE FACTS
The principal study fueling the original claim of immune impairment involved preparations created with white blood cells that had been removed from marijuana smokers and controls. After exposing the cells to known immune activators, researchers reported a lower rate of "transformation" in those taken from marijuana smokers. 26
However, numerous groups of scientists, using similar techniques, have failed to confirm this original study. 27
In fact, a 1988 study demonstrated an increase in responsiveness when white blood cells from marijuana smokers were exposed to immunological activators. 28
Studies involving laboratory animals have shown immune impairment following administration of THC, but only with the use of extremely high doses. For example, one study demonstrated an increase in herpes infection in rodents given doses of 100 mg/kg/day - a dose approximately 1000 times the dose necessary to produce a psychoactive effect in humans. 29
There have been no clinical or epidemiological studies showing an increase in bacterial, viral, or parasitic infection among human marijuana users. In three large field studies conducted in the 1970s, in Jamaica, Costa Rica and Greece, researchers found no differences in disease susceptibility between marijuana users and matched controls. 30
Marijuana use does not increase the risk of HIV infection; nor does it increase the onset or intensity of symptoms among AIDS patients. 31 In fact, the FDA decision to approve the use of Marinol (synthetic THC) for use in HIV-wasting syndrome relied upon the absence of any immunopathology due to THC. 32
Today, thousands of people with AIDS are smoking marijuana daily to combat nausea and increase appetite. There is no scientific basis for claims that this practice compromises their immune responses. Indeed, the recent discovery of a peripheral cannabinoid receptor associated with lymphatic tissue should encourage aggressive exploration of THC's potential use as an immune-system stimulant. 33
Reply With Quote"
Kur logika?
Sergantieji AIDS rūko marihuaną, kad galėtų normaliai gyvent, o jie praktiškai labai su minimaliu imunitetu, tai kaip čia yra?
"The immune suppression issue was first raised in research by the notorious cannabophobe Dr. Gabriel Nahas, but a flurry of research by the Reagan administration failed to find anything alarming. The recent discovery of a cannabinoid receptor inside rat spleens, where immune cells reside, raises the likelihood that cannabinoids do exert some sort of influence on the immune system. It has even been suggested that these effects might be beneficial for patients with auto-immune diseases such as multiple sclerosis. Nevertheless, not a single case of marijuana-induced immune deficiency has ever been clinically or epidemiologically detected in humans.
One exception is the lungs, where chronic pots smokers have been shown to suffer damage to the immune cells known as alveolar macrophages and other defense mechanisms. It is unclear how much of this damage is due to THC, as opposed to all of the other toxins that occur in smoke, many of which can be filtered out by waterpipes and other devices.
There is no reason to think marijuana is dangerous to AIDS patients. On the contrary, many AIDS patients report that marijuana helps avert the deadly "wasting syndrome" by stimulating appetite and reducing nausea. Cannabinoids do not actually damage the T-cells, which are depleted in HIV patients: one study even found that marijuana exposure increased T-cell counts in subjects (not AIDS patients) whose T-cell counts had been low. Epidemiological studies have found no relation between use of marijuana or other drugs and development of AIDS.
National Organization for the Reform of Marijuana Laws
1001 Connecticut Avenue NW, Suite 1010
Washington, D.C. 20036"
tai atsigert reik vandens, atsigaus smegenys, gavusios vandens sužaliuos. 
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