http://archpsyc.ama-assn.org/cgi/content/short/archgenpsychiatry.2011.5
http://healthland.time.com/2011/02/07/marijuana-linked-with-earlier-onset-of-schizophrenia-in-research-review/
Hmm, from the last link you provided.
The meta-analysis found that people who smoked marijuana developed psychotic disorders an average 2.7 years earlier than people who did not use cannabis. But the review also found that people who used any illegal drug suffered psychosis two years earlier than non-users, not a large difference.
Read more:
http://healthland.time.com/2011/02/07/marijuana-linked-with-earlier-onset-of-schizophrenia-in-research-review/#ixzz1MxNqc4B9I can quote other studies that say the exact opposite. Here's a NYT article on it.
http://www.nytimes.com/1999/03/18/us/government-study-of-marijuana-sees-medical-benefits.htmlGOVERNMENT STUDY OF MARIJUANA SEES MEDICAL BENEFITS
By SHERYL gαy STOLBERG
Published: March 18, 1999
The active ingredients in marijuana
appear to be useful for treating pain, nausea and the severe weight loss associated with AIDS, according to a new study commissioned by the Government that is inflaming the contentious debate over whether doctors should be permitted to prescribe the drug.
The report,
the most comprehensive analysis to date of the medical literature about marijuana, said there was
no evidence that giving the drug to sick people would increase illicit use in the general population. Nor is marijuana a ''gateway drug'' that prompts patients to use harder drugs like cocaine and heroin, the study said.
The authors of the study, a panel of 11 independent experts at the Institute of Medicine, a branch of the
National Academy of Sciences, cautioned that the benefits of smoking marijuana were limited because the smoke itself was so toxic. Yet at the same time, they recommended that the drug be given, on a short-term basis under close supervision, to patients who did not respond to other therapies.
http://www.naturalnews.com/029780_marijuana_cancer.htmlMarijuana Benefits Cancer: Two Studies You Probably Never Read About
Monday, September 20, 2010 by: Tony Isaacs
(NaturalNews) In February 2000 researchers in Madrid announced they had destroyed incurable brain tumors in rats by injecting them with THC, the active ingredient in cannabis. The study was later published in the journal Nature Cancer Review. Chances are that you have never heard of this study, the same as you likely never heard of a previous similar study. There has been a virtual news blackout as well as a concerted government effort to suppress such stories and studies for over thirty years.
The study by Manuel Guzman of Madrid Spain found that cannabinoids, the active components of marijuana, inhibited tumor growth in laboratory animals by modulating key cell-signaling pathways and thus causing direct growth arrest and death of tumor cells. The study also found that cannabinoids inhibited angiogenesis and that cannabinoids were usually well tolerated and did not produce the generalized toxic effects of conventional chemotherapies.
According to neurologist Dr. Ethan Russo, the Guzman study was very important because cancer cells become immortalized and fail to heed normal signals to turn off growth and die on cue. In addition, the other way that tumors grow is by sending out signals to promote angiogenesis, the growth of new blood vessels. Cannabinoids turn off these signals as well.
Normally, any story that even suggests the possibility of a new treatment for cancer is greeted with headlines about a "cancer cure" - however remote or improbable it might be. However, if marijuana is involved, don't expect any coverage from mainstream media.
News coverage of the Madrid discovery has been virtually nonexistent in this country. The news broke quietly on Feb. 29, 2000 with a story that ran once on the UPI wire about the Nature Medicine article. The New York Times, The Washington Post, and Los Angeles Times all ignored the story, even though its newsworthiness would seem indisputable: a benign substance occurring in nature destroys deadly brain tumors.
The previous study which indicated that marijuana could be effective against cancer was conducted in 1974. In that study, researchers at the Medical College of Virginia, who had been funded by the National Institutes of Health to find evidence that marijuana damages the immune system, found instead that THC slowed the growth of three kinds of cancer in mice - lung and breast cancer, and virus-induced leukemia.
The DEA quickly shut down the Virginia study and all further cannabis/tumor research, according to Jack Herer, who reported on the events in his book, "The Emperor Wears No Clothes". In 1976, President Gerald Ford ended all public research on cannabis and granted exclusive research rights to major pharmaceutical companies, who unsuccessfully attempted to develop synthetic forms of THC that would deliver the medical benefits without the "high."
In 1983, the Reagan/Bush Administration attempted to persuade American universities and researchers to destroy all 1966-76 cannabis research work, including compendiums in libraries, reported Herer. He stated, "We know that large amounts of information have since disappeared."
On March 29, 2001, the San Antonio Current printed a story by Raymond Cushing titled, "POT SHRINKS TUMORS; GOVERNMENT KNEW IN '74" which detailed government and media suppression of news about marijuana cancer benefits. Cushing noted in his article that it was hard to believe that the knowledge that cannabis can be used to fight cancer has been suppressed for almost thirty years and aptly concluded his article by saying:
"Millions of people have died horrible deaths and in many cases, families exhausted their savings on dangerous, toxic and expensive drugs. Now we are just beginning to realize that while marijuana has never killed anyone, marijuana prohibition has killed millions."
But it causes psychosis, you say? I can find another study that shows the opposite.
http://norml.org/index.cfm?Group_ID=8179Patients With Schizophrenia Report Subjective Benefits From Marijuana, Study Says
May 6, 2010 - New Brunswick, Canada
New Brunswick, Canada: Male patients diagnosed with schizophrenia report obtaining subjective benefits from marijuana, according to survey data published in the March issue of the Canadian Journal of Nursing Research.
Investigators from Edmundston Regional Hospital, Psychiatry/Mental Health Department in New Brunswick, Canada surveyed eight men with schizophrenia who had a history of current or past cannabis use.
Researchers reported that subjects consumed marijuana "as a means of satisfying the schizophrenia-related need for relaxation, sense of self-worth, and distraction."
Survey data published in 2008 in the International Journal of Mental Health Nursing also reported that many schizophrenic patients obtain relief from cannabis, finding that subjects consumed cannabis to reduce anxiety, mitigate memories of childhood trauma, enhance cognition, and "improve their mental state."
The findings may help to provide insight as to why several recent studies have identified a non-causal association between the use of marijuana and schizophrenia.
And for you to say, "Lord Phan" that ALL STUDIES ARE PROPAGANDA FROM THE LEFT, is absolutely 100% biased and absurd. That's like saying that anything that anyone says from the pharmaceutical companies is 100% correct, and anyone that contradicts their findings are FROM THE LEFT.
Bologna.