SkydiveStMarys 0 #1 October 27, 2005 NEW YORK (Reuters Health) - Although both marijuana and tobacco smoke are packed with cancer-causing chemicals, other qualities of marijuana seem to keep it from promoting lung cancer, according to a new report. ADVERTISEMENT The difference rests in the often opposing actions of the nicotine in tobacco and the active ingredient, THC, in marijuana, says Dr. Robert Melamede of the University of Colorado in Colorado Springs. He reviewed the scientific evidence supporting this contention in a recent issue of Harm Reduction Journal. Whereas nicotine has several effects that promote lung and other types of cancer, THC acts in ways that counter the cancer-causing chemicals in marijuana smoke, Melamede explained in an interview with Reuters Health. "THC turns down the carcinogenic potential," he said. For example, lab research indicates that nicotine activates a body enzyme that converts certain chemicals in both tobacco and marijuana smoke into cancer-promoting form. In contrast, studies in mice suggest that THC blocks this enzyme activity. Another key difference, Melamede said, is in the immune system effects of tobacco and marijuana. Smoke sends irritants into the respiratory system that trigger an immune-regulated inflammatory response, which involves the generation of potentially cell-damaging substances called free radicals. These particles are believed to contribute to a range of diseases, including cancer. But cannabinoids -- both those found in marijuana and the versions found naturally in the body -- have been shown to dial down this inflammatory response, Melamede explained. Another difference between tobacco and marijuana smoking, he said, has to do with cells that line the respiratory tract. While these cells have receptors that act as docks for nicotine, similar receptors for THC and other cannabinoids have not been found. Nicotine, Melamede said, appears to keep these cells from committing "suicide" when they are genetically damaged, by smoking, for instance. When such cells do not kill themselves off, they are free to progress into tumors. THC, however, does not appear to act this way in the respiratory tract -- though, in the brain, where there are cannabinoid receptors, it may have the beneficial effect of protecting cells from death when they are damaged from an injury or stroke, according to Melamede. All of this, he said, fits in with population studies that have failed to link marijuana smoking with a higher risk of lung cancer -- though there is evidence that pot users have more respiratory problems, such as chronic cough and frequent respiratory infections. If marijuana does not promote lung cancer, that could factor into the ongoing debate over so-called medical marijuana. Melamede said he believes "marijuana has loads of medicinal value," for everything from multiple sclerosis, to the chronic pain of arthritis, to nausea caused by cancer treatment. U.S. government officials, however, maintain that the evidence for medical marijuana is not there. Ten states allow people to use marijuana with a doctor's prescription, but the Supreme Court has ruled that federal law trumps state law. SOURCE: Harm Reduction Journal, October 18, 2005A miracle is not defined by an event. A miracle is defined by gratitude. Quote Share this post Link to post Share on other sites
missg8tordivr 0 #2 October 27, 2005 And my parents told me Pot was bad for you!!! How do I get over all the lies!!! *** F LORIDA! Quote Share this post Link to post Share on other sites
Mike111 0 #3 October 27, 2005 Marijuana isn't as bad as they say? goody Goody goody! Oh well, might have to revert to smoknig that instead Quote Share this post Link to post Share on other sites
vpozzoli 0 #4 October 27, 2005 QuoteAnd my parents told me Pot was bad for you!!! How do I get over all the lies!!! I think you should sue them. Ciao. Vale Quote Share this post Link to post Share on other sites
erikzero 0 #5 October 27, 2005 MY TRIBUTE TO POT http://www.skydivingmovies.com/ver2/pafiledb.php?action=file&id=2284 It is better to watch when stoned I made it when I was Quote Share this post Link to post Share on other sites
Skydivinghippie 0 #6 October 27, 2005 It's funny that the original federal law that outlawed hemp farming did so not because of health or cultural issues, but due to the fact that chemical process could extract a compound very similar to gasoline and cheaper than crude oil refinement. However it was too late. The oil field owners had already found their way into the lawmakers pocket books. Is this a democracy? Cause it sounds alot like Fascism. I'll be your huckleberry. Quote Share this post Link to post Share on other sites
smiles 0 #7 October 27, 2005 The DEA's own Administrative Law Judge Francis Young has declared that "marijuana in its natural form is far safer than many foods we commonly consume." Cannabis is radically different from tobacco in that it does not contain nicotine and is not addictive. Medium to heavy tobacco smokers will live seven to ten years longer if they also smoke'm marijuana. Smokers of cannabis have been shown to outlive non- smokers. Due to marijuana's ability to clear the lungs of smog, pollutants, and cigarette smoke, it reduces your risk of emphysema, bronchitis, and lung cancer. Marijuana is an expectorant and actually dilates the air channels it comes in contact with. Asthma sufferers smoke'm marijuana to provide relief. Smokin marijuana bud is more effective than all of the prescription drugs on the market. Cannabis tars do not contain radioactive materials. Marijuana smokers do not smoke anywhere near as much as tobacco smokers, due to the psychoactive effects of cannabis. Not one case of lung cancer has ever been successfully linked to marijuana use. Cannabis, unlike tobacco, does not cause any narrowing of the small air passageways in the lungs. Smoke'm the bud dudes (if ya gott'em) SMiles Quote Share this post Link to post Share on other sites
SkydiveStMarys 0 #8 October 27, 2005 Well you know what they say about being a well informed consumer............LOL!A miracle is not defined by an event. A miracle is defined by gratitude. Quote Share this post Link to post Share on other sites
SpeedRacer 1 #9 October 28, 2005 I believe marijuana smoke is less harmful than tobacco smoke. That said, i think most of those "facts" are bullshit. Speed Racer -------------------------------------------------- Quote Share this post Link to post Share on other sites