State rules marijuana smoke is a carcinogen, may require dispensaries to post warnings - San Jose Mercury News
By April Dembosky - San Jose Mercury News
Posted: 06/20/2009 01:30:00 AM PDT
STATE RULES marijuana SMOKE IS A CARCINOGEN, MAY REQUIRE DISPENSARIES TO POST WARNINGS
[It's not clear that the article below is accurate about the implications of CA EPA's finding that
marijuana smoke is a carcinogen. According to my reading of Prop 65, the only thing it requires is that employers post warning signs in premises where workers will be exposed to
marijuana smoke, and only in businesses with more than 10 employees. I don't see anything in Prop 65 that would require warning signs on the product itself. Maybe I missed something in the regulations; we need to have an attorney look at this more closely.
There was nothing surprising in the ruling itself. Cal NORML has been advising users for years that
marijuana smoke, like tobacco, contains known carcinogens. The question is how much of a cancer risk they actually present. Note that not a single study to date has examined the cancer risks of second-hand inhalation of
marijuana smoke. Thus, it is entirely possible that not a single case of cancer has ever been caused by workplace exposure to
marijuana smoke. By far the largest epidemiological study of first-hand
marijuana smoking, by Dr. Hashibe and Tashkin, surprisingly found no evidence of increased risk of respiratory cancers. However, a number of smaller studies have found a possible link to throat & neck cancer and other cancers.
Like most environmental agencies, the CA EPA does not operate on economic principles of risk analysis by attempting to weigh positive versus negative evidence, but tends to put heavy emphasis on any potential risks, no matter how small. Thus, under Prop. 65, warning signs would be required for a chemical that had been proven to increase life expectancy (for example, by preventing heart attacks), if that same chemical happened to have a minute cancer risk.
It is important to note that the CA EPA finding does not apply to vaporized
marijuana, nor to
marijuana edibles.
- Dale Gieringer, Cal NORML ]
Newshawk: DrugSense: Drug Law Reform - DrugSense: Drug Policy Reform Contributions
Pubdate: 20 jun 2009
Source: San Jose Mercury News (CA)
Author: April Dembosky
State rules marijuana smoke is a carcinogen, may require dispensaries to post warnings - San Jose Mercury News
By April Dembosky - San Jose Mercury News
Posted: 06/20/2009 01:30:00 AM PDT
STATE RULES marijuana SMOKE IS A CARCINOGEN, MAY REQUIRE DISPENSARIES TO POST WARNINGS
Joints and baggies sold at California's medical marijuana dispensaries will soon carry a new warning label. Next to tags like "Purple Haze" and "White Widow" will be the advisory: Contents may cause cancer when smoked.
On Friday, California added marijuana smoke to its official list of known carcinogens, joining the ranks of arsenic, asbestos and DDT. Pot brownies, lollipops and other non-inhalables are not affected by the new ruling.
Scientists found the pungent smoke shares many of the same harmful properties as tobacco smoke, warranting its inclusion on the Proposition 65 warning list. The law requires the state to publish a list of chemicals known to cause cancer or reproductive toxicity, and businesses and government agencies must post warnings when they use such chemicals or sell products containing them.
"marijuana smoke is a mixture of different chemicals, and a number of those were already on the Prop. 65 list," said Allan Hirsch, chief deputy director of the state Office of Environmental Health Hazard Assessment, which made the designation.
From a health perspective, pot advocates say the ruling was unsurprising, given the state's track record on documenting the harmful effects of all kinds of smoke inhalation. However, some are worried by its political implications as advocates attempt to legalize recreational use of marijuana.
"I definitely have concerns about law enforcement and politicians who aren't in favor of medical marijuana or law reform, who would use this designation to further restrict access," said Allen St. Pierre, executive director of NORML, the National Organization for the Reform of marijuana Law, based in Washington, D.C. "This will be a vexing series of conversations and negotiations."
Though marijuana smoke was added to the list Friday, the labeling requirements won't go into effect until June 19, 2010. Only medical marijuana dispensaries with 10 employees or more are required to post a warning either in their shop or on the products themselves. Violations of the law carry a fine up to $2,500 per violation per day.
The panel of scientists at the state Office of Environmental Health Hazards Assessment reviewed an extensive body of research finding links between marijuana smoke and cancer, particularly head and neck cancers.
"There's not one single piece of evidence that was a slam dunk," said Dr. George Alexeeff, deputy director for scientific affairs at the OEHHA. "But the pieces together form a very compelling argument."
The panel did not consider studies showing medical benefits of marijuana, like reducing nausea and restoring appetite after chemotherapy or slowing the progression of glaucoma.
"Singling out marijuana is gratuitous," said Assemblyman Tom Ammiano, D-San Francisco, who introduced a bill to legalize recreational marijuana. "Many, many symptoms of disease can be alleviated through smoking marijuana."
St. Pierre says the ruling may factor into the larger philosophical debate about the role public health officials may play in adult choices. He hopes the national conversation will turn to minimizing the harmful consequences of smoking pot, rather than aiming for a utopian drug-free society.
--
Dale Gieringer -
dale@canorml.org
California NORML, 2215-R Market St. #278, San Francisco CA 94114 -(415) 563- 5858 -
www.canorml.org
06-20-2009, 07:00 PM
Emancipate yourself from mental slavery, none but ourselves can free our mind 
California EPA Rules Marijuana Smoke is a Carcinogen
speaks louder than words.
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