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Second-Hand Smoke Causes CANCER

Wallstreetatheist
Posts: 7,132
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2/9/2015 6:08:28 PM
Posted: 1 year ago
Secondhand smoke (SHS) is classified as a "known human carcinogen" (cancer-causing agent) by the US Environmental Protection Agency (EPA), the US National Toxicology Program, and the International Agency for Research on Cancer (IARC " a branch of the World Health Organization).

Tobacco smoke is a mixture of gases and particles. It contains more than 7,000 chemical compounds. More than 250 of these chemicals are known to be harmful, and at least 69 are known to cause cancer.

SHS has been linked to lung cancer. There is also some evidence suggesting it might be linked to lymphoma, leukemia, and brain tumors in children, and cancers of the larynx (voice box), pharynx (throat), nasal sinuses, brain, bladder, rectum, stomach, and breast in adults.

IARC reported in 2009 that parents who smoked before and during pregnancy were more likely to have a child with hepatoblastoma. This rare liver cancer is thought to start while the child is still in the uterus. Compared with non-smoking parents, the risk was about twice as high if only one parent smoked, but nearly 5 times higher when both parents smoked.
http://www.cancer.org...
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Welfare-Worker
Posts: 1,182
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2/9/2015 6:43:37 PM
Posted: 1 year ago
At 2/9/2015 6:08:28 PM, Wallstreetatheist wrote:
Secondhand smoke (SHS) is classified as a "known human carcinogen" (cancer-causing agent) by the US Environmental Protection Agency (EPA), the US National Toxicology Program, and the International Agency for Research on Cancer (IARC " a branch of the World Health Organization).

Tobacco smoke is a mixture of gases and particles. It contains more than 7,000 chemical compounds. More than 250 of these chemicals are known to be harmful, and at least 69 are known to cause cancer.

SHS has been linked to lung cancer. There is also some evidence suggesting it might be linked to lymphoma, leukemia, and brain tumors in children, and cancers of the larynx (voice box), pharynx (throat), nasal sinuses, brain, bladder, rectum, stomach, and breast in adults.

IARC reported in 2009 that parents who smoked before and during pregnancy were more likely to have a child with hepatoblastoma. This rare liver cancer is thought to start while the child is still in the uterus. Compared with non-smoking parents, the risk was about twice as high if only one parent smoked, but nearly 5 times higher when both parents smoked.
http://www.cancer.org...

So as I understand it, second hand smoke does not contribute significantly to lung cancer.
Do I have that part correct?
And what about effect on adults from second hand smoke - is there a casual link with cancer?