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Originally Posted by rkzenrage
There has never been a study that shows a direct link between smoking and cancer.
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The AMA have never shown a link, no study by any school or private study have ever shown a cancer risk increase over 8% for smokers.
The rest is propaganda. "Common sense" = Superstition, show me the numbers.
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For the direct link, you should look at this article published in the New York Times ten years ago:
Direct Link Found Between Smoking and Lung Cancer
For scary numbers, look at pages 40 through 43 of
Cancer Facts and Figures 2005, published by the
American Cancer Society. They claim that, in the US, "tobacco use is responsible for nearly 1 in 5 deaths". They include nearly two pages of references, if you are looking for more numbers.
According to the
Smoking and Cancer Mortality Table, published by the American Cancer Society, men who are current smokers are 23.3 times as likely to die from Lung Cancer as non-smokers. Men who are former smokers are 8.7 times as likely to die from lung cancer as non-smokers.
In the 1950s,
Richard Doll surveyed over 40,000 doctors about their smoking habits. Two and a half years later, they surveyed the mortality rates. They found that people who smoked more than 25 grams of tobacco per day suffered from "excess mortality". The difference in mortality was statistically significant: BUT if they omitted deaths from lung cancer, the difference in mortality between smokers and non-smokers was was "no longer significant" (from page 4 of
this pdf of the original study).