Posted by stjames on January 29, 2001, at 3:24:38
In reply to Dangers of Marijuana (how it effects mental ill.), posted by PatJ. on January 28, 2001, at 16:21:26
Myth: Marijuana is Harmless
Just as most experts agree that occasional or moderate use of marijuana is innocuous, they also agree that excessive use can be harmful. Research shows that the two major risks of excessive marijuana use are: (1) respiratory disease due to smoking and (2) accidental injuries due to impairment.
Marijuana and Smoking:
A recent survey by the Kaiser Permanente Center found that daily marijuana-only smokers have a 19% higher rate of respiratory complaints than non-smokers.1 These findings were not unexpected, since it has long been known that, aside from its psychoactive ingredients, marijuana smoke contains virtually the same toxic gases and carcinogenic tars as tobacco. Human studies have found that pot smokers suffer similar kinds of respiratory damage as tobacco smokers, putting them at greater risk of bronchitis, sore throat, respiratory inflammation and infections.2Although there has not been enough epidemiological work to settle the matter definitively, it is widely suspected that marijuana smoking causes cancer. Studies have found apparently pre-cancerous cell changes in pot smokers.3 Some cancer specialists have reported a higher-than-expected incidence of throat, neck and tongue cancer in younger, marijuana-only smokers.4 A couple of cases have been fatal. While it has not been conclusively proven that marijuana smoking causes lung cancer, the evidence is highly suggestive. According to Dr. Donald Tashkin of UCLA, the leading expert on marijuana smoking:5
“Although more information is certainly needed, sufficient data have already been accumulated concerning the health effects of marijuana to warrant counseling by physicians against the smoking of marijuana as an important hazard to health.”
Fortunately, the hazards of marijuana smoking can be reduced by various strategies: (1) use of higher-potency cannabis, which can be smoked in smaller quantities, (2) use of waterpipes and other smoke reduction technologies,6 and (3) ingesting pot orally instead of smoking it.
Footnotes
1. Michael R. Polen et al. “Health Care Use by Frequent Marijuana Smokers Who Do Not Smoke Tobacco,” Western Journal of Medicine 158 #6: 596-601 (June 1993).
2. Donald Tashkin, “Is Frequent Marijuana Smoking Hazardous To Health?” Western Journal of Medicine 158 #6: 635-7 (June 1993).
3. D. Tashkin et al, “Effects of Habitual Use of Marijuana and/or Cocaine on the Lung,” in Research Findings on Smoking of Abused Substances, NIDA Research Monograph 99 (1990).
4. Paul Donald, “Advanced malignancy in the young marijuana smoker,” Adv Exp Med Biol 288:33-56 (1991); FM Taylor, “Marijuana as a potential respiratory tract carcinogen,” South Med Journal 81:1213-6 (1988).
5. D. Tashkin, “Is Frequent Marijuana Smoking Hazardous To Health,?” op. cit.
6. Nicholas Cozzi, “Effects of Water Filtration on Marijuana Smoke: A Literature Review,” MAPS (Multidisciplinary Association for Psychedelic Studies) newsletter, Vol. IV #2 (1993) (Reprints available from MAPS and Cal. NORML).
poster:stjames
thread:52766
URL: http://www.dr-bob.org/babble/20010122/msgs/52843.html