Friday, December 20, 2013

When It Comes to Second Hand Smoke and Cancer, Studies Find There's No Fire There

A new study from Stanford University published in the Journal of the National Cancer Institute confirms what several other major studies have found over the past 2 decades, there is no link between Second Hand Smoke (SHS) and cancer

The study looked at 76,000 women and found, "women who had never smoked, exposure to passive smoking overall, and to most categories of passive smoking, did not statistically significantly increase lung cancer risk. The only category of exposure that showed a trend toward increased risk was living in the same house with a smoker for 30 years or more."

The first major study to call into question the claims surrounding SHS was released in 1998.  The World Health Organization (WHO) report found no link between exposure to SHS as a child and increased risk for lung cancer.  It also only find weak evidence of spousal exposure and increased cancer risk.
"Our results indicate no association between childhood exposure to ETS and lung cancer risk. We did find weak evidence of a dose-response relationship between risk of lung cancer and exposure to spousal and workplace ETS. There was no detectable risk after cessation of exposure."
In 2002, the Greater London Assembly issued a report based on an intense six-month investigation into the effects of SHS.   The investigation included testimony from experts on both sides of the issue.  In the end, they found that there was no proof of a link between SHS and cancer. As a result, they declined to recommend any future  restrictions on smoking in public places.
“The assembly spent six months investigating whether a smoking ban should be imposed in public places in London. After taking evidence from all sides, including health experts, it was decided that the evidence gathered did not justify a total smoking ban.”
In 2003, a UCLA study published in the British Medical Journal (BMJ) looked at data collected between 1960 and 1998 by the American Cancer Cociety on adults living in California, likely the most exhaust study of SHS ever conducted, and found no link between SHS and cancer.
"The results do not support a causal relation between environmental tobacco smoke and tobacco related mortality, although they do not rule out a small effect. The association between exposure to environmental tobacco smoke and coronary heart disease and lung cancer may be considerably weaker than generally believed."
The myriad of studies that refute anti-smoking propaganda just provide more evidence that those who wish to increase acceptance for concentrating power within the government to make about how people choose to live their life are willing to use pseudo-science in order to shape public opinion, in much the same way as they have over the whole global warming debacle.


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